Eumelanin
真黑素
🗣️ 情景例句
They concluded that the goods were of good quality and proved no problem.
他们断定货物质地优良，并证明没有任何问题。
Seize (or Take) time by the forelock.
撤热打铁。
We had a very nice time.
我们过得非常愉快。