grist
noun uk/ɡrɪst/ us/ɡrɪst/
grist to the millUK (US grist for the mill) 可用来为（某人）谋利的事情，对（某人）有利的事情
anything that can be used to your advantage
I might as well learn another language, it's all grist to the mill when it comes to getting a job. 我也可以再学一门外语，那样对找工作很有利。