have another/more than one string to your bow 

to have more than one interest, skill, or resource that you can use if you need to

還有一手;有兩手準(zhǔn)備

I enjoy my work, but I'd like to have another string to my bow in case I lose my job.

我喜歡我的工作，但我想做好兩手準(zhǔn)備，以防萬一失業(yè)。

She is a multi-talented woman with many strings to her bow.

(素材來源網(wǎng)絡(luò)，如有侵權(quán)請聯(lián)系刪除)