英汉词典

1. （指与周围岛屿相对的）大陆，本土
    You can refer to the largest part of a country or continent as the mainland when contrasting it with the islands around it.

    e.g. She was going to Nanaimo to catch the ferry to the mainland.
           她准备去纳奈莫乘渡船回大陆。
    e.g. ...the islands that lie off the coast of mainland Britain.
           远离英国本土的岛屿