Bela
[医] 印度枸桔(芸香科)
🗣️ 情景例句
I'm just not sure about what I want to do.
我不知道该读什么？
have you invited any friends?
你邀请朋友吗？
As a shipbuilder, Cockerell was trying to find a solution to the problem of the wave resistance which wastes a good deal of a surface ship's power and limits its speed.
作为一个船舶技帅，科克雷尔在寻找解决波浪阻力的方法，因为波浪阻力浪费掉了船在水面行驶的大量动力，从而限制了船的速度。