题目内容
8. Once built,it needs to be used by the people. And ,it needs to provide benefits to its owners.(once)
一经制造,就需要为人所用;一经使用,就需要为物主带来好处。
8. once (it is) used
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题目内容
8. Once built,it needs to be used by the people. And ,it needs to provide benefits to its owners.(once)
一经制造,就需要为人所用;一经使用,就需要为物主带来好处。
8. once (it is) used