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

I enjoy my work, but I'd like to have another string to my bow in case I lose my job. 我喜欢我的工作，但我想做好两手准备，以防万一失业。

She is a multi-talented woman with many strings to her bow. 她多才多艺，有多手准备。