如果这是你的第一胎，你就非常有可能会太早到医院。
If this is your first baby, it's far more likely that you'll get to the hospital too early.
红鲑鱼终生只产卵一胎。
一胎多仔的动物一次生的后代。
我太太在产前一个月流产了第一胎。
My wife lost her first child a month before it should have been born.
一般说来，狼一胎能产下四到六只幼崽。
玛丽：是猫娃哈哈第一胎吗？
猫有时一胎产四、五只幼仔。
她们14岁就成婚，不久便会怀上第一胎。
They marry as early as 14 and have their first baby soon after.
第一胎是女孩的农村夫妇也可以生育第二胎。
Rural couples are allowed a second child if their first is a girl.
如果严格实施一胎政策，中国现在将会怎样？
How China might look if the one-child policy were strictly enforced?
他是一个单身的孩子，是中国一胎政策的产物。
妻子现在怀着第一胎，所以他们想要个更大的房子。
She is expecting their first child, and so they are looking for a bigger place.
不过如果仅看第一胎，这一比率也“只有”108。
But if you take first births alone, the ratio is "only" 108.
大部分好的育种家在一年里只计划一胎或两胎小狗。
这是第一胎吗？
我一胎只有一个，但是那是一个完完全全纯种的狮子。
I have only one; but that one is altogether a thoroughbred Lion.
因此，我开始为那些生完最后一胎的母犬找领养的家庭。
That is why I begin to look for homes for bitches after their last litter.
大丹犬妈妈辛苦地在一胎产下17只小狗宝宝之后，终于如释重负。
This Great Dane has her work cut out after she gave birth to 17 puppies.
对于那些不是第一胎的父母来说，这仅是个有关枕头套品味的讨论课。
For the uninitiated, these are sessions where people get to compare their taste in pillowcases.
我们被告知第一胎婴儿可能不会按预定的时间出生，或早几天或晚几天。但是我们怎么也没想到孩子居然在我和父亲生日这天出生了。
We were told first babies rarely arrive on their due day, they can be early and late so we never thought for a moment that the baby would be born on mine and my dad's birthday.
我们被告知第一胎婴儿可能不会按预定的时间出生，或早几天或晚几天。但是我们怎么也没想到孩子居然在我和父亲生日这天出生了。
We were told first babies rarely arrive on their due day, they can be early and late so we never thought for a moment that the baby would be born on mine and my dad's birthday.
我们被告知第一胎婴儿可能不会按预定的时间出生，或早几天或晚几天。但是我们怎么也没想到孩子居然在我和父亲生日这天出生了。
We were told first babies rarely arrive on their due day, they can be early and late so we never thought for a moment that the baby would be born on mine and my dad's birthday.
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