🗣️ 情景例句
Exploring outer space is a challenge to mankind.
探索外层空间是一项向人类发出的挑战。
To be afraid of getting a ticket
害怕得到交通罚款单
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。