每日猜词：这次er构词法算有效么？

看单词，猜词意，今日单词：trooper

背单词打卡 2022.10.02

查了有道，troop的名词是军队，动词是队列行进，稳步前行的意思。那么后缀er应该是把动词变名词了。事实上确实是变名词了，关键是词意是否能对应上，类似write和writter那样。会是稳步前行者么？先猜一下词意，然后再查词典，意外可以让我们更容易的记住单词。

Read word and guess the meaning, today's word: trooper

I look up this word in YouDao dictionary, noun means army, verb means that a group of people walk forward formally. normally suffix "er" can make a verb to be a noun. actually in this case it does, but the point is that the meaning of noun matches the meaning of verb? such as "write" vs "writer". so the meaning of noun could be people who walk forward formally? Please guess the meaning first, then look up it in dictionary, unexpectedness can help us to remember words easier.