1、yoy的意思是：year-on-year的缩写，增长率;增减率;上年。

2、例句：However, when comparing year-on-year figures, port throughput contracted by13.4%, compared to a10% YoY drop in March. 然而，与去年同期相比，4月港口吞吐量收缩了13.4%，而3月同比降幅为10%。