a baby bus的用法和样例：
- She could knit up a baby's coatee in an afternoon.
- The bus conductor became the man of the moment when he acted as midwife to a woman who gave birth to a baby on his bus.
- I let it slip that I am expecting a baby.
- A baby isn't born with a moral sense.
- Nancy gave birth to a baby boy last night.
- It's public knowledge she's expecting a baby.
a baby bus的相关资料：