Etching(re) agent
[化] 蚀刻剂
🧩 词语组成解析
🗣️ 情景例句
How many brothers and sistes do you have?
你有多少个兄弟姐妹？
She will certainly remain single.
她肯定会保持独身。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。