up to - Definition & Meaning | Lingo Dictionary

up to

deeply involveddeeply involved

同义词

up to your neck up to our necks neck-deep up to my neck up to their necks up to his neck

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up to

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深入参与, 非常忙碌

deeply involved

同义词：

up to your neck up to our necks neck-deep up to my neck up to their necks up to his neck