"The best time to begin obesity prevention efforts for the next generation is actually prior to birth," he says.

预防下一代肥胖的最佳时间是孩子出生前，“他说。”

This study was based on infants who received betamethasone prior to birth, and they did not show the same adverse effects as previous studies.

这项研究基于出生前接受倍他米松治疗的婴儿，它们没有显示同先前研究相同的副作用。

Well, that's right and of course we don't have any good reason to follow Plato when he says it must be the case that the soul exsited prior to birth.

这是正确的，而且我们没什么好的理由，跟随柏拉图的观点，即，灵魂存在于出生之前。