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(Mr. Ng 不推薦使用 Google 翻譯!)
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up and down

: forward and backward several or many times : repeatedly in one direction and then the opposite direction来回往返;反复往返
: from a lower position to a higher position several times上下反复
⇒ Main Entry: 1 up

up and down

informal
: sometimes good and sometimes bad时好时坏
⇒ Main Entry: 2 up

👨🏻‍🏫 Mr. Ng 韋氏詞典 📚
切換為繁體中文
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