未开采的石油储量untapped reserves of oil煤储量很难探明.It's difficult to ascertain the coal deposits.随着大型油井的枯竭，要想从北海的石油和天然气开采中盈利，必须着力于开采小储量的油井。To harvest oil and gas profitably from the North Sea, it must focus on the exploitation...
She worked indefatigably and enthusiastically to interest the young in music.为了激发年轻人对音乐的兴趣，她一直孜孜不倦、积极热情地工作。The announcement was greeted enthusiastically.公告受到人们的热烈欢迎。Critics enthusiastically acclaimed the new play.评论家们热情洋...