Pandas have only one or two young at a birth.

熊猫每胎产仔一、二只。

《新英汉大辞典》

And you, "they said," how many sons have you at a birth?

那么你，“他们说，”你一胎生多少个幼师呢？

youdao

Why is it that we rejoice at a birth and grieve at a funeral?

我们为何在出生之时高兴而在殡殓之时又悲伤呢？

youdao

She gave birth to Thomas -- or Tiggy, as his parents call him -- at a hospital in Washington.

VOA: special.2010.08.04

No English poet before Milton ever suggested that he had been chosen by God at birth to be a poet.

在弥尔顿之前没有英国诗人敢说,自己是被上帝选中去做诗人的。

耶鲁公开课 - 弥尔顿课程节选

as we've seen, establishing a fiction that works to place himself at the scene of a nativity that obviously occurs 1600 years and change before his own birth.

我们也看到了，他创建了一个虚构的景象,把自己放进了基督诞生的幻景中,而这些比他出生早1600年发生并不断在改变。

耶鲁公开课 - 弥尔顿课程节选

Epidemiologic studies over the past 40 years have identified numerous risk factors for breast cancer, including: older age, an early age at menarche, a late age at first full-term birth, not having children, a family history of breast cancer in a first-degree relative, greater height, higher circulating estrogen levels, postmenopausal hormone use, breast density, history of breast biopsies, obesity (for postmenopausal breast cancer), and exposure to ionizing radiation.

FORBES: After 40 Years Of Research, What Do We Know About Preventing Breast Cancer?

He also debunks the claim that angels sang at the birth, a staple theme of Christmas carols.

CNN: Pope's book on Jesus challenges Christmas traditions

Katie's genetic heritage is unknown: We adopted her at birth from a mother who lived in a campground trailer.

FORBES: People and Things to Like--2005