Harmfulness
n. 有害；伤害
✅ 同义词
🗣️ 情景例句
She's still giving the toughest English history exams
她仍用最艰深的英国史试题考学生
I don't have a phonograph,either.
我也没有留声机。
The Hubble telescope was launched into space by NASA on April 20,1990 at a cost of over a billion dollars.
哈勃望远镜于1990年4月20日由国家航空航天局发射升空，耗资10多亿美元。