Hippos are unable to submerge in the few remaining water holes...在仅剩的几个水坑里，河马根本无法没入水中。But exactly where hippos sit on the artiodactyl family tree has proved devilishly difficult to discern.河马也属于偶蹄目,这点专家并无异议,但是它们到底位在偶蹄动物演...
AID or artificial insemination by a donor他精人工授精In animal breeding, especially cattle - breeding, artificial insemination is now widely used.在动物生育, 特别是牛的生育中, 人工授精已经广泛使用.These cases particularly recommend themselves to tre...
Behind me, the Washington Symphony Orchestra is playing Mozart's Requiem.在我后面, 华盛顿交响乐团演奏的就是莫扎特的挽歌.The BBC Symphony Orchestra played with great panache.英国广播公司交响乐团演奏起来挥洒自如。This is a large orchestra, with a vast percus...
即使是最有天赋的人也可能会被错误的导师摧毁自信。Even the most gifted can have confidence destroyed by the wrong instructor.他生来就是个有设计天赋的机械师。He was a born mechanic with a flair for design.他是个非常有天赋的舞者。He's an exceptionally talented dancer....