This is useful for irrigation, but the high temperatures, low humidities, and different day lengths of the dry season, compared to the normal growing season, can present difficulties with some crops.
这对于灌溉是有用的，但是旱季的高温、低湿度和不同于正常生长季节的白昼长度，会给一些作物的生长带来困难。
This is useful for readers to correct typos .
这是非常有用的为读者正确的拼写错误。
This is useful for logging and handling exceptions.
这一点在捕获和记录异常时非常有用。
This is useful for passwords or other access secrets.
这对于密码或其他访问秘密非常有用。
This is useful for households with more than one collector.
这是非常有用的家庭不止一个收藏家。
This is useful for dispatching messages to a queue, for example.
比如，它对分发消息给一个队列非常有用。
This is useful for notifying worker threads of external events.
这点对于通知外部事件的工作者线程来说很有用。
This is useful for tools that produce unusually formatted output.
这对生成不常见格式输出的工具很有用。
This is useful for bathrooms or any surface you desire to disinfect.
这可以用于浴室或你所希望来消毒的任何表面。
This is useful for scientists working in forests and in agriculture.
这对于那些从事森林和农业研究的科学家非常有用。
This is useful for displaying a 404 page or redirecting to another route.
当需要显示404页面或者重定向到其它路由时，该特性非常有用。
This is useful for creating effects such as billowing smoke and explosions.
这经常在创建例如翻滚的烟雾和爆炸场景中应用到。
This is useful for detecting when a signal gets stuck at a particular voltage.
这是非常有用的对于检测一信号什么时候滞留在一特定电压。
This is useful for automated tests of applications or benchmarking of applications.
这对应用程序的自动化测试或应用程序的基准是很有用的。
If necessary, you can put parentheses around the array. This is useful for arrays of arrays.
如果需要的话，可以用括号把数组括起来，这对创建多维数组是很有用的。
This is useful for validating input or for splitting a document where the pattern matches.
这对于验证输入或分隔与模式匹配的文档很有用。
This is useful for adding borders, captions, or other types of static overlays to your video.
这对于在视频上添加边框、标题或其他静态叠加内容很有用。
This is useful for servers that have a graphics card and need to keep the installation to a minimum.
这对于装有显卡并且需要保持最小化安装的服务器是非常有用的。
This is useful for processing security alerts as well as redundant and distributed Nagios setups.
这对于处理安全性警告以及冗余和分布式Nagios 设置都很有用。
This is useful for quickly identifying different cumulative states of a component in a workspace or stream.
这对快速识别工作区或者流中构件状态的不同累计来说，是十分有用的。
This is useful for battery charging, but - you'll notice how "lumpy" the Direct Current looks on the scope.
这是有益的电池充电，而且-你会发现如何“块状”直流期待的范围。
This is useful for examining how you spend your time and where. It is most useful for considering your work.
这个训练对检讨你如何以及在哪里破费你的时间很有用，对你的工作尤其有辅助。
This is useful for those who want more space for music, video, and apps than their phone allows out of the box.
这对那些需要比手机内存更多空间来存储音乐、视频、或应用程序的用户来说非常有用。
This is useful for situations such as an OutOfMemoryError being thrown when creating more objects would be impossible.
对于不可能创建对象时抛出Out Of MemoryError之类的场景来说，这是非常有用的。
This is useful for security purposes and collaboration purposes, both of which are critical to good change management.
这对安全目的和协助目的很有用，这两点对好的变更管理非常关键。
This is useful for certain commercial software packages that install System V init scripts and scripts for BSD style init.
这对于那些为BSD方式初始化而安装systemV初始化脚本商业软件来说是很有用的。
This is useful for applications where you expect to create a number of different build configurations for each version.
对那些想要每一个版本创建很多不同构建配置的应用程序来说，这很实用。
The following example annotates the return value of a function. This is useful for checking the return type of a function.
如下的示例则注释了某函数的返回值。
This is useful for the spectra processing by means of the IRAF software packages and for the data exchange at home and abroad.
这对于使用IRAF系统进行光谱处理，以及国内国际间的资料交换是有用的。
This is useful for those wanting to undertake such a role, or those wanting to find suitable candidates for fulfilling such a role.
这一小节对于那些希望承担这样一个角色的人们、或者那些希望找到满足要求的候选者的人们来说，是十分有用的。
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