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BE up on与BE up t0 区别

be up on 熟悉,精通,擅长 be up to 胜任,达到,由…负责 由以上中文意思可见,be up to并不需要达到精通的地步,要求要比be up on低一些

M+QSCQSiUTyuPzPGON//58gCIIgCM9BA1gQBEEQDkAD...okSNvLCuhyfi79wAF8rNNUp7ZXFYj95PJiNIHy8hT8Yj...WlrogqEtGbqAI+V9egsqBt0i4iaTdkIuxmLPJbohRl5qq...

You will miss the bus unless you hurry up.你...Unless(I am)compelled t0 stay in by bad ...Put on your raincoat or you’ll get soaked.=...

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