Diffusiometer
[医] 扩散率测定器, 弥散率测定器
🗣️ 情景例句
Notices are displayed on the bus asking people not to smoke.
公共汽车上张贴着请勿吸烟的公告。
What did you do the week before last?
上上星期你干了什么？
My name is Jim Green. I am twelve. This is my school. It is No. 14 Middle School.
我叫吉姆·格林。我12岁了。这是我的学校，这是第十四中学。