meal ticket

柯林斯詞典

1. N-SING If you say that something or someone is a meal ticket, you mean that they provide a person with money or a lifestyle which they would not otherwise have. 飯票; 提供生活來源的人或物[usu 'a' N]
His chosen field was unlikely to be a meal ticket for life. 他選的這一行儅是不可能賴以爲(wèi)生的。
I don't intend to be a meal ticket for anyone. 我不想給任何人儅飯票。