名词 “breadwinner” 来自 “bread（面包）” 和 “winner（赢家）”。这个合成词的字面意思是 “赢回面包的人”，它实际用来指 “外出工作、挣钱养家的人”。如果想强调某人是全家唯一的经济支柱，则可以在 “breadwinner” 前加上形容词 “sole（唯一的）”，即 “the sole breadwinner（家中唯一养家糊口的人）”。

例句
We both used to work, but when the baby was born, Mike became the sole breadwinner.
我们俩过去都工作，但孩子出生后，迈克成为了家里唯一挣钱养家的人。

As a single mum, my sister had to work to pay the bills. She was the sole breadwinner of the family.
作为一个单身母亲，我妹妹不得不工作赚钱，支付家庭开支。她是家里唯一的经济支柱。

After Barry lost his job, Tina became the main breadwinner.
巴里丢掉工作后，蒂娜成了家里主要的经济来源。