Geomagnetograph
地磁记录仪
🗣️ 情景例句
If the owners don't claim the dog in forty-eight hours,
如果狗的主人在四十八小时内不认领，
My cousin is a member of a riding club, He seems riding.
我的表兄是一个骑马俱乐部成员，他似乎很喜欢骑马。
All gun-ports were open and the muzzles peeped wickedly from them.
船上的炮眼都开着，炮口虎视眈眈地向外窥视着。