Piperazidine
[化] 哌嗪
🗣️ 情景例句
Everything I earn helps us towards getting that house
我的每一笔进帐都可帮助我们得到那幢房子
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
He will be earning only half as much as he used to,
他将来挣的钱只有他现在的一半。