他的承诺像烟雾一样虚无缥缈,没有任何实质内容。

His promises were as gaseous as smoke, with no real substance to them.

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His promises were as gaseous as smoke, with no real substance to them.

gaseous 是形容词,由名词 gas(气体)加上形容词后缀 -eous 构成,表示"气体的"或"像气体一样的"。在这里比喻承诺像气体一样虚无缥缈、没有实质内容。

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