Tetraethylene pentamine
[化] 四亚乙基五胺
🗣️ 情景例句
What is the cost?
费用是多少？
We'd like to hear what you say concerning the matter of packing.
我们很想听听你们在包装方面有什么意见。
Where's Mr. Williams this evening?
威廉斯先生今晚去哪儿了？