Proper infection dosage and routes were selected to make the chickens artificially infect avian colibacillosis successfully.选择适宜的攻毒剂量和攻毒途径,诱发淮南麻黄鸡大肠杆菌病....
He claimed he had only acted under coercion.他声称他只是受了胁迫才采取了行动。We prefer you to work voluntarily rather than by coercion.我们宁愿你工作出于自愿,而不是被迫.Neither trickery nor coercion is used to secure confessions.既不诱供也不逼供....