Tetraethylene pentamine
[化] 四亚乙基五胺
🗣️ 情景例句
Thank you. Would you like something to drink? A cup of coffee?
谢谢。你想喝点儿什么？来杯咖啡吗？
Better late than never.
迟做总比不做好。
It's a pen.
一支钢笔。