Under these circumstances, archaeologist Andrew Smith believes, the small herds of Bos primigenius in the desert became smaller, more closely knit breeding units as the drought took hold.
Yet, keeping these household water collections free from mosquito breeding only requires simple measures: storing drinking water under cover so that mosquitoes cannot deposit their eggs.
然而，要使这些家庭储水器没有蚊子繁殖，只需采取简单措施：将储存的饮用水覆盖，使蚊子不能在那里产卵。
3
A small meat processing training centre was established under the Livestock Breeding and Veterinary Department (LBVD) in Yangon and fully equipped with small-scale meat processing machinery.