Underfelting
(underfelt 的现在分词) n. （垫在地毯下的）地毯垫
🗣️ 情景例句
Why not?
有何不可？
He studied quite a lot.
他非常用功。
I'm planning to do a special study of satellites next term.
我计划下学期就卫星的问题做些特别的研究。