Floatations
(floatation 的复数) n. 漂浮, 浮选(法), 筹款, 创立, 筹资开办, (船的)下水\\n[化] 浮选
🗣️ 情景例句
and it is on a half-acre lot.
用地半英亩。
I often go to bad at night.
我常常在晚上睡觉。
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。