Rotor blade
[化] 转子叶片
🧩 词语组成解析
n. 转子, 旋筒, 转动体\\n[化] 转鼓; 转轴
blade
[bled]
n. 刀片，剑;（壳、草等的）叶片;桨叶;浮华少年;
🗣️ 情景例句
I just don't know what to say.
我真不知该说什么好。
Tomorrow Mark will hear from his manager about the job.
明天，马克将听经理谈有关工作的事。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。