Trousers were over breeches when horseback riding to keep the more formal clothes clean.
骑马要为了更能保持正式礼服的清洁，这时裤子（trousers）胜过了马裤（breeches）。
2
The simplified lines and palette of post-revolution gentlemen’s wear—blue, grey, white and buff—were themselves based on the English country gent’s attire of dark coat, ridingbreeches and boots.