Do perform regular system backups, and keep your data backup off-site.
请按时将系统备份，并将数据另外保存。
"Even when they do perform a download, it's usually not that useful," says April Yergin, a Houston-based accident-reconstruction expert.
“即使他们下载了，通常也没什么用处，”爱普瑞尔·耶金说，他是休斯顿的事故重建问题专家。
If you do perform unit tests, you already know what a difference it makes: fewer bugs, better-designed software, and fewer surprises when you make a change.
如果你进行了单元测试，你已经知道它会产生什么不同：更少的bug、更好的软件设计、以及在你进行修改时更少出现奇怪现象。
Although these buttons are useless to the average person, they do perform their proper function for fire fighters and maintenance workers but only with a code or designated keys.
尽管这些按键对普通人而言没有作用，但对于使用密码或特定钥匙的消防员或维修人员来说，这些按键能够很好地发挥其作用。
Studies from the United States and Australia show that students who take a gap year are generally better prepared for and perform better in college than those who do not.
美国和澳大利亚的研究表明，经历过间隔年的学生通常比未经历过间隔年的学生对大学生活有更充分的准备，在校的表现也更好。
How do you perform this process?
您如何执行该步骤呢？
The research argued that boys often perform badly in mixed schools because they become discouraged when their female peers do better earlier in speaking and reading skills.
研究认为，男孩通常在男女混合学校的表现不好，因为当其女性同龄人比他们更快地在口语和阅读技能上做得更好时，他们会灰心。
She can perform Chinese kung fu a little now, but she couldn't do it last year.
她去年还不会中国功夫，但现在会一点了。
他们执行事务吗？
Do participants perform well enough to meet the usability objectives?
测试参与者的表现是否满足可用性目标？
Do not perform the undo checkout operation on a unit that is not checked out.
不要在一个没有检出的单元上执行取消检出操作。
We got to sing and perform and do things others usually don't do.
我们有机会唱歌、表演、做一些其他人做不到的事情。
The reason it doesn't work is that the publishers do actually perform quite a useful service: they edit the book, then they publicise it.
不起作用的原因就是事实上出版商提供了相当有用的服务：他们编辑书，然后宣传它。
Do not perform the check-in operation on a unit that is checked in.
不要在检入的单元上执行检入操作。
Do not perform a switch over if any of the prerequisites are not met.
如果有任何前提条件不满足，就不要执行切换。
It's worth noting that you do not perform the distinct function on a cursor or result set as you do other query functions, but you perform it directly on the collection.
值得注意的是，您在执行其他查询函数时不能在指针和结果集上执行distinct函数，而应直接在集合上执行。
So what we would do is that we would then perform an intervention.
所以我们要做的是对他们进行一些干涉。
Although different access paths for the same SQL statement produce the same result set, they most likely do not perform the task with the same level of performance.
虽然相同sql语句的不同访问路径会产生相同的结果集，但是它们很有可能不会通过同样的性能级别来执行任务。
Error message: You do not have enough permissions to perform this operation.
错误信息：您没有足够的权限来执行该操作。
Sorts that do not overflow always perform better than those that do.
不溢出的排序通常执行得比那些溢出的好。
The JVM verifies all classes in class loaders and ensures that applications do not perform any dangerous operations.
JVM验证类装入器中所有的类并确保应用程序不会执行任何危险操作。
However, in most cases, you do not need to perform query tuning manually.
尽管如此，大多数情况下，您不需要手工执行查询调优。
And at the top of the hierarchy, the executive leaders who set goals and oversee the program certainly do not perform the same detailed activities as project managers.
并且在这个层级的顶端，设定目标和监督规划的主管经理当然不会执行与项目经理同样详细的活动。
Many customers find that they do not need to perform this splitting step.
许多客户发现他们需要执行这个分割步骤。
When a unit is added to archive and is already controlled by configuration management, do not perform the add-to-archive operation.
当一个单元添加致档案中，或者已经由配置管理控制时，不要执行添加至档案的操作。
This enables DBAs to do everything to the database that they would ordinarily do-perform regular administration tasks, load data, use utilities-but not see or alter the data.
这让 DBA 能够对数据库执行他们原来所做的所有操作（执行日常管理任务、装载数据、使用实用程序等等），但是不会看到或修改数据。
But it also has a policy of firing people who do not perform well.
不过它同时也有解雇表现不佳的雇员的政策。
In the meantime, you'd do well to perform some simple tests using your own favorite API, to see how it (ideally) preserves semantic equivalence.
同时，您也可以使用喜欢的API作一些简单的测试，看看它是否(理想地)保持了语义等价性。
In the meantime, you'd do well to perform some simple tests using your own favorite API, to see how it (ideally) preserves semantic equivalence.
同时，您也可以使用喜欢的API作一些简单的测试，看看它是否(理想地)保持了语义等价性。
应用推荐