Alan Barrett of the University of Texas says travel by carriers of influenza, be they people in aeroplanes or birds on the wing, means regional mutations quickly spread around the world.
德克萨斯大学的阿兰·巴瑞特说,流感通过载体的传播就像是人们坐飞机或是鸟儿飞翔一样,意味着区域变异会很快传播到世界各地。
Ugly duckling, Ugly duckling, grow up quickly, you will have a white wing, you know it was the best way to express when you spread your wing and fly away.
丑小鸭呀丑小鸭,快快长大啦,长出洁白的翅膀,展翅高飞才是最好的表达自我方式。
鸟伸展翅膀。
应用推荐