de 加强意义 + sign =mark,表示“记号,信号”\" + er [名词后缀],表示人,行为的主动者→做标记的人 → n.设计师,阴谋家,,制图师
🗣️ 情景例句
You've been a very helpful.
你帮了大忙。
I want to change some British sterling into Renminbi.
我想把一些英镑换成人民币。
The worst thing about the do-it-yourself game is that sometimes even men live under the delusion that they can do anything, even when they have repeatedly been proved wrong.