I got less than I wanted when I sold my car but I made a good profit on the caravan-what you lose on the swings, you gain on the roundabouts. 我的汽车没能卖出好价，但我的有大篷的卡车却卖出了价钱——真是失之东隅，收之桑愉。
The sea is gaining on the land. 海水逐渐侵蚀陆地。
What you gain on the swings you'll probably lose on the roundabouts. 有所得也可能有所失。
The sea was gradually gaining on the buildings, which at length almost entirely disappeared. 大海不断地侵蚀着这些建筑物，最后它们几乎完全不见了。
