Sent_en: 2zh During rush hours, the 9 is a skip-stop supplement to the 1, running the same route but skipping some stops in Upper Manhattan and the Bronx.
Sent_yy: 在高峰时间，9号列车提供对1号列车的越站补充服务。它虽然在同一条线路运行，但是在上曼哈顿和布朗克斯区会跳过某些车站。