We must use all our scientific artifice to protect it.
我们必须使用我们所有的科学手段来保护它。
We must learn the language and how to use it well.
我们必须学习这种语言并且了解如何很好地使用。
It's no use talking like that. We must make a plan and realize it.
像那样谈论是没有用的。我们必须制定一个计划,然后加以实施。
As we all know, our life time is not so much, so we must make full use of it.
我们都知道,我们活着的时间并不长,所以我们必须要充分利用。
We must all reduce energy consumption by being careful about how we use it.
我们仔细了解应如何使用它,而且所有人都必须降低能源消耗。
But we must remember not to use it extravagantly.
但一定要记住不能过度用水。
We must control time. The best way to use time is to plan it well.
我们必须学会控制时间,最好的方法就是:计划好它。
We must control time. The best way to use time is to plan it well.
我们必须学会控制时间,最好的方法就是:计划好它。
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