It is a good idea to build a whelping box well in advance so the bitch has time to get used to it.

最好预先为母犬建一个产箱，这样母犬可以有时间去适应。

youdao

When a breeder chooses a dam for breeding, the breeder must select a well-constructed bitch with a good producing record.

当繁殖者挑选了一只母犬做繁殖，繁殖者必须挑选一只有很好的生殖记录的优质母犬。

youdao

The Wicked Witch, Elphaba (originally played by the excellent Idina Menzel), turns out to be good, while Glinda the Good Witch (originally played by Kristen Chenoweth) is exposed as a smug, ambitious, manipulative bitch, with little talent for sorcery.

NEWYORKER: Wicked