Hydrodynamics
n. 流体力学, 水动力学\\n[化] 流体动力学
🗣️ 情景例句
Mom is now on television
妈妈现在出现在电视上
The tour will take about an hour and a half. We ought to be back here by 3:00.
参观大概要一个半小时，3点钟以前回到这里。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。