Isogrid
地磁等变线
🗣️ 情景例句
I've known Martin for years.
我认识马丁好多年了。
The first several months were a difficult time.
所以头几个月过得有些艰难。
in France in 1806, and in England in 1876,
在法国是在1806年，在英国是在1876年。