Arealometer
纤维细度气流测定仪
🗣️ 情景例句
And there's no reason why you can't do it from your home.
而且也没有理由你不可以在家里做。
Thank you for helping me.
谢谢你帮了我的忙。
Where did you learn to speak English?
你从哪里学会说英语的呢？