[译] 降低成本、提高质量对企业和工人都有利。
[误] Lowering costs and improving quality are beneficial for both the company and the workers.

[正] Lowering costs and improving quality are beneficial to both the company and the workers.
[注] 形容词 beneficial 之后习惯用介词 to ，又如：Exercise is beneficial to health.体育运动有益于健康。