One picture holds both meanings: a small carriage on wheels with a baby inside it, and an adult walking behind, pushing. What changes between the two meanings is not the picture but the carriage in it — whether the baby lies down as if in a little bed, or sits up in a light chair that folds away. So the real question this word asks is not what it is, but where the speaker is from.
One branch
推著寶寶走的車
登入就可以看這一支怎麼連回核心畫面。
lie-flat baby carriage (US) · noun
In American English, a small carriage on wheels that an adult pushes a baby in. The baby lies down flat inside it, like in a little bed, so it is used for babies who are still too young to sit up.
嬰兒車（躺著的）