Do you know why he was mulling and hesitating?你知道他为什么前思后想、犹豫不决吗？She stood hesitating on the threshold.她站在门口，犹豫不决。He's still hesitating about joining the expedition.他对于参加这次探险队仍犹豫不决....
霍乱即将暴发。Conditions were ripe for an outbreak of cholera.霍乱是一种细菌感染。Cholera is a bacterial infection.建议注射预防霍乱的疫苗。An inoculation against cholera is recommended....
They enjoy anything that breaks the dullness of their routine life.只要能打破他们日常刻板、沉闷的生活，任何事情他们都喜欢。Mental dullness is prominent, and delirium may occur.神志迟钝加甚, 且可发生谵妄.He found the dullness of his work scarcely bearable.他觉得他的...