sidelinen.(球场)边线；副业；附带出售的商品v.使退出比赛；把…排挤在核心之外sideline business副业sideline beekeeping副业养蜂sideline production副业生产sideline occupation副业sidelines of science科学的边缘区域sidelined by an injury因伤退出比赛Sideline in real estate兼营房地产sideline animal husbandry副业畜牧业sideline for singles match单打比赛边线sideline for doubles match双打比赛边线