since 隐藏摘要 
自从
until 直到…….为止
since 自从
worth 值….钱
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从句
I have been here since five months ago.
3) since +从句
Great changes have taken place since you left.
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从…以来;因为
sin n.罪,罪孽 vi.犯罪
since conj.从…以来;因为
sincere a.真诚的;真挚的
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自从…以来
354. math n. 数学
355. since prep. 自从…以来
356. determine v. 确定
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