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abbr. submarine fog bell 潜水雾钟
🗣️ 情景例句
That was fast.
而且又快。
That's my business.
那是我的事情。
But I'm worried about his Chinese.He may fall behind the other students when he comes back.
但我担心他的中文。等他回来后，他可能会落到其他同学后面。