To advertise during prime time TV is very expensive.
在电视的黄金时段买广告是很贵的。
Goodbye. Remember to look me up if you're ever in Washington.
再见。要是你光临华盛顿的话,别忘了来看我。
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.