The trachea in some patients is difficult or impossible to intubate under any circumstances.

有的病人的气管在任何情况下都是很难、或根本不可能插管的。

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The trachea in some patients is difficult or impossible to intubate under any circumstances.

有的病人的气管在任何情况下都是很难、或根本不可能插管的。

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