hold back
短语
大学
[化] (蒸馏时轻馏分被重馏分)滞留
发音
AU
词形变化
held back
holding back
holds back
三单
holds back
holding back
现在分词
held back
过去式
held back
过去分词
释义与例句
v.
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1.
To act with reserve; to contain one's full measure or power.
习语 不及物Don't hold back. Hit it as hard as you can.
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2.
To contain; stop.
习语 及物The dam can't hold back that much water.
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3.
To delay the progress of, especially in school.
习语 及物He's a year older than his classmates, because he was held back in second grade.