采采蝇为传染昏睡病的媒介.The tsetse fly is a bearer of sleeping sickness.昏睡症的致命感染始于采采蝇的一叮.The fatal infection begins with the bite of a tsetse fly.通过被感染的采采蝇的叮咬传染给人类.It is spread to humans through the bite of infected tsetse flies....
Commercial AM stations operate in the frequency range of 535 to 1605 kHz.商业调幅电台的运作频率范围为535千赫(kHz)到1605千赫.The best known solution to the 4 KHz bottleneck is ISDN.解决4KHz瓶颈最有名的方案是ISDN( 综合服务数据网).Some Horseshoe bats can detec...