On the other hand, rainfall increased in the interior of western Africa, and the northern limit of the tsetsefly, an insect fatal to cattle, moved south.
另一方面,西非内陆的降雨量增加,采采蝇活动区域的北部边界向南移动——一种对牛致命的昆虫。
2
The tsetsefly is a bearer of sleeping sickness.
采采蝇为传染昏睡病的媒介。
3
It is spread by the bite of an infected tsetsefly (Glossina Genus), a species native to the African continent.