Determeter
(往复式)去污试验仪
🗣️ 情景例句
Yeah, Grandpa,
对呀， 爷爷。
Do you really want to know what I think?
你真想知道我怎么想吗？
Textile business has become more and more difficult since the competition grew.
随着竞争的加剧，纺织品贸易越来越难做了。