他用微型声波发射器开启了门。He activated the door with the miniature sonic transmitter.这个声音的声波如图B所示。The sound waves of the voice could be diagramed as in B.声波在真空里不能传播.Sound waves will not travel through a vacuum....
我要在布里斯托尔组织一场义演来募集这些资金。I am organising a benefit gig in Bristol to raise these funds.所有募集到的资金都将用于“白血病患儿”组织。All funds raised will be used by Children With Leukaemia.他们对募集资金的呼吁作出了慷慨的响应.They have made generous response to th...