你可能已经学习了数周，但是考试就是关键时刻。
You may have been studying for weeks, but the test is the moment of truth.
这辆车我们连续修了数星期，现在是关键时刻了——引警能发动起来吗？
We've worked on the car for weeks and this is it-will the engine start?
数是英语教学中的一个关键而又难以捉摸的概念。
Number is a crucial but elusive concept in English teaching and learning.
这些都加起来就是此关键词的真正竞价数。
提出线路的电气介数并将其用于电力系统关键线路识别。
Electric betweenness and its application in line identification in the power system is presented.
提出线路的电气介数并将其用于电力系统关键线路识别。
Electric betweenness and its application in line identification in the power system is presented.
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