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abbr. submarine fog bell 潜水雾钟
🗣️ 情景例句
I feel sorry for the beggars, but I can't stand it when they teach their children how to beg.
我很同情乞丐，但我真的看不惯他们教孩子怎么样行乞。
Your question is how we developed our product?
你的问题是我们是如何发展我们的产品？
If explosives are used, vibrations will cause the roof of the mine to collapse.
如果用炸药爆破，震动会引起矿顶塌落。