Diphenylbenzidine
二苯基联苯胺
🗣️ 情景例句
With great tact, Lily said that it was time for her to go.
莉莉机智地说她该走了。
Bed is a midicine.
睡好觉，如服药。
unless the parents themselves have been unsatisfactory,
除非父母自身不能令人满意，