然而，出生前后死亡率(怀孕22周和出生后第一周的婴儿死亡率)几乎相同。

But the perinatal mortality rate (the number of babies that die between the 22nd week of pregnancy and the first week after birth) was about the same.

youdao

然而，出生前后死亡率(怀孕22周和出生后第一周的婴儿死亡率)几乎相同。

But the perinatal mortality rate (the number of babies that die between the 22nd week of pregnancy and the first week after birth) was about the same.

youdao