The head of a string of pigs appeared, snout-up, over the ditch, and he had to screech to a stop and watch the rear of the last pig disappear shaking into the ditch on the other side.

这时候出现了一群猪，仰着鼻子走过水渠，他只好用一个急刹车,目送着最后一只猪大摇大摆地跨过水沟,消失在另一端。

耶鲁公开课 - 1945年后的美国小说课程节选

Well, it also illustrates that one of the things you do after you introduce a vaccine, you can't stop there, you have to continually watch what's happening with this disease in your population.

同时,也告诉我们,将疫苗推向公众后,你不能就此放手,你必须得继续观察,接种过疫苗的人中,该疾病的发病情况

耶鲁公开课 - 生物医学工程探索课程节选