Nujol
医药用润滑油
🗣️ 情景例句
What do you mean?
是什么意思？
We have known each other for 6 years.
我们认识有六年了。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。