某些课程是必修的，其他是选修的。Certain courses are compulsory, others are optional.不.许多罗列的课程都是选修的.No. A lot of these are listed as optional.这些选修的课程使得学生能够修一些他们有兴趣的科目.These electives allow students to study subjects that interest them....
Its tallest volcano, long extinct, is Olympus Mons.它最高的火山是早已熄灭的奥林波斯山。The extinct volcano's eruption would mean a cataclysm for the city.死火山又重新喷发,对这座城市来说意味着大难临头.Is there anything could rekindle his extinct passion?有什...
Recently it makes a sizable dent in this prediction.这一预言最近有了很大进展.Losing the match made quite a dent in his ego.比赛失败对他的自尊心打击极大.The commission had barely begun to make a dent in the problem...委员会几乎还没有在这个问题上取得任何进展。The embar...