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英语词汇
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空中警戒
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DEFINITIVE EXAMPLES 权威例句〔certain〕To make extra certain, a police helicopter kept watch overhead.为确保万无一失, 一架警用直升机一直在空中警戒。外研社新世纪
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toluene disulfonate
toluene disulfonic acid
toluene formaldehyde resin
toluene halide
toluene monochloride
toluene pentachloride
toluene plant
toluene resin
toluene tetrachloride
toluene tribromide
toluene-3,4-dithiol
toluene-p-sulfonic acid
toluene-sulfondichloramine
tolueneazonaphthylamine
toluenediamine
toluenesulfinate
toluenesulfinic acid
toluenesulfodichloramide
toluenesulfonamide
toluenesulfonanilide
toluenesulfonate
toluenesulfonyl
toluenesulfonyl butylamine
toluenesulfonyl dibutylamine
toluenesulfonyl dimethylamine
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更新时间:2026/6/3 17:55:40