Gummer
除粉器
🗣️ 情景例句
She's coming over this morning to help me with my math.
她今天早晨要过来帮我补习数学。
Rome was not built in a (or one) day.
罗马不是一日建成的。
from which can be seen the strata the drill has been cutting through.
从中能看出钻头所钻透的地层。