Geomagnetometer
地磁仪
🗣️ 情景例句
Fine, thank you.
很好， 谢谢。
Wit bought is better than wit taught.
不经一事，不长一智。
They had to edge their way along this, sometimes wading across shallow streams, or swimming across deep pools.
他们不得不侧着身子往前走，有时过浅溪，有时游过深潭。