Challenges
n. 挑战( challenge的名词复数 ); 要求; （警卫等）查问口令; 怀疑
🗣️ 情景例句
That's load off my mind.
这一来我心里轻松了。
I was at home all afternoon.
我整个下午在家。
You look as if you didn't care.
你看上去好像满不在乎。