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垫整电容器
🗣️ 情景例句
I'm not sure I'm up to it.
我不能肯定我是否能做得来。
I'm sorry to burst in on you like this, but I'm really upset.
我很抱歉这样突然地找您，但我真的很心烦。
It was a great help to me.
真是获益良多