Donning
插筒管
🗣️ 情景例句
It's a problem, isn't it?
这确实是个问题，不是吗？
Are you going anywhere?
你打算上哪儿去玩？
They then knew that they had discovered the cause of the fire.
这时调查人员知道他们找到了发生火灾的原因了。