单词	anhydro
释义	anhydro adjective an·​hy·​dro anˈhī(ˌ)drō : of or relating to an anhydride anhydro sugars compare dehydro Word History Etymology anhydr- First Known Use 1870, in the meaning defined above
随便看	keep (to) keep a civil tongue keep a close check on keep a close eye keep a close watch keep a close watch over keep a close watch/eye keep a cool head keep a diary keep a level head keep a lid on keep a lookout for keep a rein on keep a secret keep a sharp eye on keep a straight face keep a watch out for keep a watchful eye on keep a watchful eye on (someone or something) keep a watchful eye on someone or something keep a weather eye on keep abreast of keep after keep ahead of the field keep an eagle eye on

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