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....
他用力挤过人群.He muscled his way through the crowd.我们用力挤上了公共汽车.We thrust ourselves forward into the bus.下雪了, 一只狐狸用力挤进了入口,争取了自己的一块小地方.It'started to snow, so a fox pushed his and made himself right at home....
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...