doubles sidelineOur editors are putting together more complete content — check back in about 20 minutesdoubles sideline名詞 · 2動詞 · 1doubles sideline — noun名詞1. a line marking the side of a sports field or court1.名詞釋義a line marking the side of a sports field or court例句The ball went out of bounds over the sideline.2. a secondary business or activity2.名詞釋義a secondary business or activity例句She runs a baking sideline on weekends.doubles sideline — verb動詞1 解釋1. to cause a player to be unable to play1.動詞釋義to cause a player to be unable to play例句The injury sidelined him for the rest of the season.