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He was breathing through his open mouth.
他张着嘴呼吸。
《牛津词典》
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Fire came from its open mouth.
火从它那张着的嘴巴里喷了出来。
youdao
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The expanded tube is thin wall casing with open mouth.
胀管为开口薄壁套管；
youdao
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The expanded tube is thin wall casing with open mouth.
胀管为开口薄壁套管；
youdao