他们的新陈代谢率很低。

They had slow metabolic rates.

youdao

例如，如果婴儿母亲怀孕期间身体一直营养失调，那么婴儿出生时很有可能个体会非常瘦小，并且新陈代谢能力很低。

Infants born to malnourished mothers, for example, are more likely to be born small and have efficient metabolisms that require less fuel to survive.

youdao

例如，如果婴儿母亲怀孕期间身体一直营养失调，那么婴儿出生时很有可能个体会非常瘦小，并且新陈代谢能力很低。

Infants born to malnourished mothers, for example, are more likely to be born small and have efficient metabolisms that require less fuel to survive.

youdao