Anticrustator
[化] 防垢剂
🗣️ 情景例句
It's extremely good of you to do this for me.
你帮我做了这件事，真是太好了。
How much is a round-trip ticket to Beijing?
一张到北京的来回票要多少钱？
Yes, I can. Where are they?
是的，我能听到。它们在哪儿？