He must oneself look after baby.

他不得不自己照看婴儿。

youdao

Your baby depends on you to look after yourself properly while you are pregnant.

你的宝宝靠你怀孕时好好照顾你自己。

《柯林斯英汉双解大词典》

Carey didn't go to the party last night because she had to look after the baby for her sister until 9:30.

凯莉昨晚没有参加聚会，因为她必须照顾妹妹的孩子直到9：30。

youdao

This discourages firms from hiring young women who might suddenly demand time off to look after a baby.

ECONOMIST: What's ailing German industry

He'll have an exemption, enough money to pay off his mortgage, look after his wife and new baby and there's even the chance to make the Ryder Cup side on the horizon.

BBC: SPORT | Golf | An extraordinary day of golf

Fiscal depute Nicola Gillespie told the court that Morton had helped look after the girl since she was a baby.

BBC: Neil Morton