Photosedimentometer
光透式粒度测定仪
🗣️ 情景例句
I'll get you to help serve later.
等一会我会叫你帮忙分菜。
Grasp the nettle and it won't sting you.
困难像弹簧，你硬它就软。
This is a rare occurrence as our climate seldom guest to extremes.
但是在我们这里，气候很少发生异常，河水极少泛滥。