When used properly, worry is an incredible device.
如果运用得当，忧虑也是一种不可思议的工具。
It can also be exploitative, especially when used with vulnerable populations.
它也可以是剥削性的，特别是用于弱势群体的时候。
It is efficient when used properly.
正确使用时，它才有效。
Make life easier when used correctly.
在正确使用时使工作更容易。
This is great when used in a necklace.
这是伟大的项链时使用。
Most effective when used for a minimum of 8 weeks.
服用至少8周后，大多有效果。
It will surely advance productivity when used for your job.
用于对你的工作时，它必将推动生产力。
The built-in flash is also fairly weak when used underwater.
另外，在水下，内置闪光灯相对来说太薄弱了。
These functions become more powerful when used with the end function.
如果结合使用end函数，那么这些函数将变得更加强大。
It has a calming effect when used in massage oil and aromatherapy.
用于按摩油和芳香疗法中时，它能起到镇静的作用。
Best performance is achieved when used with every new tank of fuel.
达到最佳性能时，每一个新的燃料箱使用。
When used to improve the use of conditions to prevent foreign damage.
使用时注意改善使用条件，防止外来破坏。
When used with multiple threads, you must use some type of synchronization.
和多线程一起使用时，必需使用某种类型的同步。
Mutilate is being written to the combat log multiple times when used.
毁伤在战斗记录中会记录多次。
which, when used on a larger scale, can lead to hard to read spaghetti code.
当在大型应用程序中使用回调函数，就会导致编写出很难阅读的意大利面式代码。
For wires, when used in CAI, the owner of the wire is the perspective ID.
对于连接，用于CAI时连接的所有者是透视图id。
It is similar to the LENGTH function when used against a single-byte data type.
它与对单字节数据类型使用LENGTH函数类似。
When used in a loop, this kind of work reduction can save significant time.
当在循环中使用时，减少这方面的工作可以节省大量时间。
These two principles, especially when used together, can be powerful motivators.
这两个原则，特别是当用在一起的时候会成为十分有力的激励因素。
Mana Burn now causes Fear, Hex and Psychic Scream to break early when used.
法力燃烧现在会导致恐惧、妖术和心灵尖啸提前解除。
Reflection is much slower than direct code when used for field and method access.
当用于字段和方法接入时反射要远慢于直接代码。
In fact, when used properly, credit CARDS are a very powerful wealth-building tool!
事实上，当运用得当，信用卡是一个非常强大的财富建设工具！
Great care is needed when choosing a used car.
选购旧车时要特别小心。
She used to run when she was at college.
她上大学的时候经常跑步。
She used to take care of me when I was a baby.
她曾在我还是婴儿的时候照看过我。
He used to give his mother hell when he was a teenager.
他十几岁时常常给他母亲惹麻烦。
When a thing has been used, it is no longer new.
当一件东西被用过后，就不再是新的了。
When people wanted to share information with others, they used the World Wide Web.
当人们想要与他人分享信息时，他们使用万维网。
When people wanted to share information with others, they used the World Wide Web.
当人们想要与他人分享信息时，他们使用万维网。
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