learned
adj
1 having much knowledge acquired by study 有学问的; 博学的: learned men 学者
He's very learned but rather absent-minded. 他很有学问, 可是好忘事.
2 of or for learned people 学术性的; 为学者的
learned journals, societies, language 学术刊物、 团体、 语言
the learned professions, eg law, medicine 有学识的职业(如法律、 医学)
(law 律) my learned friend, ie legal colleague (a term of courtesy) (法律界同行之间的敬称).
Then, all of a sudden, it became cloudy and began to rain.
可是突然天就变了,乌云密布并下起雨来。
when they would be capable of providing information about traffic jams and suggesting alternative routes, when they would be used in hospitals to help doctors to diagnose illnesses, when they would relieve office workers and accountants of dull, repetitiv