您现在的位置是:首页 > 英语听力 > VOA英语听力下载|VOA news > VOA慢速英语|美国之音慢速英语听力下载
正文
VOA慢速英语:科学家们正在研制蒸汽驱动的宇宙飞船
2019-01-17来源:和谐英语
Update Required
To play the media you will need to either update your browser to a recent version or update your Flash plugin.
tremendous – adj. extremely good
propellant – n. fuel that causes something to move
expensive – adj. costing a lot of money
allow – v. to permit
potential – n. an ability that has not yet been developed