可以采取疫苗接种和其他预防措施。Vaccination and other prophylactic measures can be carried out.接种疫苗的成本合计约60万美元。The cost of the immunizations was about $600,000 all told.目前正在人类志愿者身上试验12种试用疫苗。Twelve potential vaccines are currently being ...
The two hotel-restaurants are attractive bases from which to explore southeast Tuscany.对于去托斯卡纳东南部探险的人们来说，这两家酒店是很有吸引力的驻扎地。Domestic chickens are descended from jungle fowl of Southeast Asia.家鸡是由东南亚原鸡演变而来的。The problem is no...
饲槽和饮水器位置合适可以提高成绩.Proper orientation of feeders and waterers promotes good performance.这个“鸟类饮水器”中水深的增加应该非常缓慢, 最深处不超过10厘米.The birdbath should deepen very gradually, to no more than 3.我在哪儿能找到喷泉式饮水器?Where can I find a water ...