Hondrometer
粒度计, 微粒特性测定计
🗣️ 情景例句
Hi, Betty. I'll be at five five five...seventeen twenty.
好 Betty 我的号码是555-1720。
If you want the trunk, look in the attic.
如果你要箱子，就在阁楼上。
What are you doing?
你在干什么？