when doing sth 还是 when do sth (语法问题)
题目
when doing sth 还是 when do sth (语法问题)
这句话:
we consider it as constant when computing the signal to noise ratio.
还是
we consider it as constant when compute the signal to noise ratio
答案
computing,动名词做状语从句
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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