To map 100 mutants by this method would necessitate nearly 5,000 crosses.用这种方法来绘制100个突变型的遗传图就要做5000个杂交.Earth crosses the orbit of Halley's Comet annually in October.地球和哈雷彗星的轨道将于每年的十月份交叉.All the morning wreaths and c...
By refusing to work they are cutting off their noses to spite their faces because the company will close down.他们拒绝工作,这是跟自己过不去,因为公司会关闭.Who would have thought the old man would close down entirely?谁能想到老头子会撒手了车厂子 呢 ?The sho...