22-08-26 Jessica在北京学汉语，她的中国朋友要是遇到了不知道用美语怎么说的词，就会来请教她。今天是吴琼要问的：攻略。 Jessica: Wuqiong, what are you doing on the computer? Youve spent hours on the Internet! WQ: Jessica, 我下个月要去意大利，出门在外，不先看看旅...

13-12-19 Biologists from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) have for the first time shown that amphipods（端足目） from the warmer Atlantic are now reproducing in Arctic waters to the west of Spitsbergen. This...