Neobalgin
硫酸钡盐
🗣️ 情景例句
Our troop was under his command.
我们的部队由他指挥。
All's fair in love and war.
爱情和战争是不择手段的。
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器（测震仪）正是采用了这种思路。