at birth中文什么意思

• 生下来时
• 在出生时

• birth:    n. 1.出生，诞生；生产，分娩。 ...
• at a birth:    一胎
• by birth:    生来; 在出生上,论出身,按血统; ...

例句与用法

1. At birth , most babies weigh between 6 and 8 pounds .
   大多数婴儿出生时的体重在6磅到8磅之间。
2. In many countries, a man's social class is determined at birth .
   在许多国家里，一个人的社会等级是由出身决定的。
3. They concluded that american literature had been well-nigh throttled at birth .
   他们断言美国文学诞生之日便几乎被扼杀了。
4. Although newborn animals are immunocompetent, they usually possess no igs at birth .
   虽然新生动物有免疫活性，但它们在出生时，一般不含免疫球蛋白。
5. It ' s a promise made to each of us at birth
   每个人在生下来之后都会得到的保证。