Firming agents
[化] 固化剂
🧩 词语组成解析
vt.& vi. 使坚固（firm的现在分词形式）
n. 间谍；代理人；代理商；特工人员（agent的复数形式）
🗣️ 情景例句
That'll cheer you up.
这样会让你舒畅些。
Did you criticize him for his mistakes?
你因为犯错误的事批评他了吗？
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，