Design classes so that an exception is never thrown in normal use.
类的设计应使在正常使用中从不引发异常。
It should run for a week in normal use before its battery needs recharging.
在日常使用中能运行一周而不用充电。
NOTE 2 Failure of basic insulation is not considered likely to occur in normal use.
注2：不考虑在正常使用中可能发生的基本绝缘失效。
Embrace failure, accept it as a part of a normal life, and take away something (if there's something to take away) that you can use to your advantage in the future.
正视失败，将它作为日常生活的一部分，带上那些将来对你有所帮助的东西(如果有值得带上的)。
Use only in the normal position (held to the ear).
仅在正常位置(耳边)使用。
In normal language use, we get just one chance at comprehension, and only one.
在正常的语言交际中，我们只有一次的理解机会，仅有一次。
In order to ensure the normal operation of pump, we must use the following methods.
为保证电泵的正常运行，必须按下述的使用方法进行。
Most of us use about five thousand words in our normal employment of English;
我们中的大部分人在日常英语的使用中大约只使用五千个单词；
Most of us use about five thousand words in our normal employment of English;
我们中的大部分人在日常英语的使用中大约只使用五千个单词；
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