Spectrocomparator
光谱比较仪
🗣️ 情景例句
My instructor thought that the beginner's class was too easy for me.
老师认为初级课程对我来说太容易了。
Oh, really? Where did you go?
哦，真好？去哪儿了？
There were twenty cars in the race.
参加比赛的有20辆汽车。