🗣️ 情景例句
I don't know haw that could have happened.
我不知道怎么会发生那样的事。
When would you like to leave?
你要什么时间离开呢？
many of them serious and senior scientists---- who dream of sending people to it.
其中的不少人是认真和资深的科学家，他们一直梦想着把人送上火星。