臭氧层受到前所未有的破坏 BBC News with David Legge Talks have been going on in Abidjan, the main city of Ivory Coast, to try to secure the surrender of Laurent Gbagbo, who's been refusing to give up the presidency since elections in Novem...
今天我们要学的词是unprecedented。 Unprecedented是指前所未有，闻所未闻。联合国日前批准派遣两万六千人的维和部队进入达尔富尔地区。联合国秘书长潘基文称这次维和行动是历史性的和空前的...
