Arealometer
纤维细度气流测定仪
🗣️ 情景例句
I hope so.
希望没事。
My grandfather got married in 1921.
我的祖父在1921年结婚。
In this way self-confidence grows, first from mastering a subject, then from being able to take about it.
这样，你自信心不断增强，先是因为掌握一门学问，接下来是因为能够就此发表见解。