The network can be enlarged by adding the number off feeders.

如果配电网扩建新增馈线,只需增加支路数.

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Are you sure you can get the phone number off by heart?

你确定你能把这电话号码背下来 吗 ?

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The platoon leader drew the soldiers up into line and bade them number off in fours.

排长让士兵排成一行,并命令他们一至四报数.

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