While the original aim was to raise the hull if at all feasible, the operation was not given the go-ahead until January 1982, when all the necessary information was available.
虽然最初的目标是在可行的情况下提高船体，但是直到1982年1月所有必要信息都具备时，这项行动才得到批准。
When Thomas had eaten all the cherries, his father said to him, "My dear son, if you had bent down earlier to pick up that horseshoe, it would not have been necessary for you to bend so many times for the cherries."
当托马斯吃完所有的樱桃后，他的父亲对他说：“我亲爱的儿子，如果你早点弯腰捡起那只马蹄铁，你就不必弯那么多次腰去捡樱桃了。”
She can't see what anything says, but she feels more in touch with his work when noticing the displays change out of the corner of her eye, and she can easily enlarge anything if necessary.
她看不到任何人说的话，但是她认为当发现显示器从她眼睛的角落改变时，她能够更多地接触到他的工作，从而在需要的时候可以轻易地放大任何事件。
If the key is encrypted, you can save the password somewhere on the disk, and read it in when necessary.
如果加密了密钥，您可以在磁盘的某处保存密码，然后在需要的时候读取它。
You can capture when a user arrives with an expired session (really a new session) and force them to login again if you think this is necessary.
当一个用户得到一个过期的会话时(其实是一个新的会话)，您可以捕获并且如果需要的话，可以强迫用户重新登陆。
Never give up on a task. Instead, learn to readjust your approach when necessary. It is okay to take a break if you are overly frustrated.
任何的一个项目都不要放弃。相反的，当有需要的时候，学会重新调整你的方法。如果你过度觉得沮丧，可以先让自己休息一下。
We met one shop owner called Ji who told us: "When someone comes to my shop, I take the deceased's details and then, if necessary, try to find a match."
我们遇到一个叫季的店主，他告诉我们：“有人到我店里来时，我会记下详细信息，如果有必要，会试着找合适的配对。”
When finished, the user data can be returned to the centralized location, if necessary.
完成后，如有需要，可以将用户数据返回到集中位置。
Rolledbales of hay should be used only when absolutely necessary, and only if theouter layers are removed and discarded.
确实需要时可以使用成捆的干草，但外层要剥掉废弃
When anacron runs, it checks to see if the required number of days has passed since the job was last run and runs it if necessary.
当anacron运行时，它检查自作业上一次运行以来是否已经经过了所需的天数，如果需要，就运行作业。
When the computer starts, Anacron checks for jobs that should be run and, if necessary, runs them.
在计算机启动后，Anacron将检查应当运行的作业，并且如果有必要的话，将运行它们。
This is the actual command to execute if deems it necessary when <run level> has been initiated.
这是在 <runlevel>已启动时， 在认为有必要的情况下执行的实际命令。
If necessary, a thread can block on the agent until its changes have been applied, or you can specify an action to be executed when the changes are applied.
如有必要，一个线程可以阻止agent，直至其更改被应用，或者您可以在应用变更时指定执行一个操作。
Through her death, I let him know that if I had had the choice when he died, I would have had the courage and the dedication necessary to be with him when he died, too.
通过卡西的死,我让汉克知道如果当时他离开人世的时候, 我有可能选择的话,我也会有在他瞑目前陪伴他的足够勇气和决心。
The tags can be deactivated if necessary, although air Force evaluations determined that they were safe aboard aircraft even when activated continuously.
如果有必要该标签可以停用，但空军评估认定，即使被不断激活，它们在飞机上也是安全的，。
Wouldn't it be cool if the application server could figure out if an application running on it had a memory leak and could restart itself when necessary?
如果应用服务系统可以指出在它上面运行的程序是否内存溢出，在需要时又能自动重启，这岂不是一件很酷的事？
For example, using snapshots, I can speed up the backup and (if necessary) the recovery times when I need to modify a number of configuration files or perform an upgrade of an application.
例如，使用快照，在需要修改多个配置文件或对应用程序执行升级时，我可以加快备份和恢复速度(如果需要)。
You can capture when a user arrives with an expired session (really, a new session) and force them to login again if you think this is necessary.
您可以在用户携带到期会话(实际上是一个新的会话)时捕捉该会话，如果认为有必要，就强制他们重新登录。
If at all possible, make the necessary preparations and configuration changes to ensure that the action will be available if and when needed, and test to make sure that it works as expected.
如果可能，做好必要的准备和配置更改，以确保该操作在需要的时候是可用的，并进行测试以确保它能够按预期进行工作。
I didn't really tell anyone I was a vegetarian unless it was necessary, such as when they were making me dinner, or we if were going out for one.
除非是必要时，例如他们在为我做饭，或我们要出去吃时，我不会告诉任何人我是个素食主义者。
This is particularly useful when fault data might be necessary outside of a SOAP fault, for instance, if you're dealing with batch operations.
当错误数据必须位于SOAP错误的外部时，这特别有用，。例如，如果您在处理批操作时。
If your site is constantly sending out updates and news announcements, it can quickly overwhelm users. Only send out notifications when absolutely necessary.
如果你的网站不断地发送更新内容和新闻通知给用户，这些信息也很快会将用户淹没的。
This may become necessary if the table was created in a tablespace with an inadequate page size or when a separate bufferpool should be used for accessing the table.
如果创建表的表空间的页面大小不合适，或者应该用另一个缓冲区池访问表，就可能需要执行这种数据转移。
This has encouraged caution rather than risk-taking, with individuals preferring to avoid mistakes when possible and hide them if necessary.
这样就要鼓励谨慎而不是冒险，应尽量的避免错误，如果有可能的话就不要犯。
If we were lucky, there was a feedback mechanism in place, but more often we arbitrarily decided when we had created all the necessary artifacts and could forge ahead to designing the system.
如果幸运的话，有一个适当的反馈机制，但更常见的是，我们武断地决定何时我们完成所有的需求产物，并继续设计系统。
If required, upgrade the new machine with more RAM and disk space when necessary.
如果需要，可以加大新机器的RAM和磁盘空间。
Deep soft snow (if movement is necessary, make snowshoes [Figure II-10]). Travel is easier in early morning or late afternoon near dusk when snow is frozen or crusted.
又深又软的雪地(如果必须前行的话，按照图ii - 10的方式制作雪鞋)。雪在清晨或傍晚时分开始冻结，选择这个时间段，前行比较容易。
when two strangers meet on such occasions, Asians will, before their mouth, present politely with their hands their calling cards to each other, as if this was a form of necessary etiquette.
在这种场合陌生人相识，如果是亚洲人，他们往往开口之前先毕恭毕敬地用双手把自己的名片呈递给对方，这好像是不可缺少的礼节。
Pursue wealth and material objects if and when they are necessary and add ease and happiness to your life, but do that without attachment.
追求财富和物质对象如果他们是必要的，添加方便和幸福，你的生活，但如果没有附件。
Don’t be afraid to look up a word if youdon’t know it, and don’t be afraid of dense passages. Take your time, re-read when necessary, and you’ll soon grow accustomed to the author’sstyle.
不要畏惧生单词和厚厚的纸张，充分利用时间，必要时反复读一遍，便会很快的熟悉了作者的写作风格和思想。
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