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from REMOVEHfrBm, $frB:mprepused to show that someone has left a place, or that something has been removed or taken away(表示离开、脱离)离People who were exiled from their homes during the war are now able to return.在战时被逐出自己家园的人们现在可以回来了。She's very upset because her handbag was snatched from her in the street this morning.她很不安,因为今天早上在街上她的手提包被人抢去了。A refining process is used to extract usable fuel from crude oil.精炼工序用于从原油中提炼出有用的燃料。If you take a smaller amount from a larger amount, you reduce the larger amount by the smaller one.从…中减去Three from sixteen is thirteen.16减3等于13。Thirty subtracted from fifty equals twenty.50减30等于20。
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