Undercoating
n. 防水底涂层
✅ 同义词
🗣️ 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻烦你母亲啦？
You're very kind to take the trouble to help me.
谢谢你不怕麻烦帮助我。
That's OK.
别客气。