Snf
abbr. 特殊护理设备（skilled nursing facility）
🗣️ 情景例句
Look at that Superman balloon!
你看那个超人气球
How are you going?Are you going by boat?
你怎样去?坐船去吗？
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。