merry-go-round
/ˈmerɪgəʊˌraʊnd/noun
1- a revolving machine with model horses or cars on which people ride for amusement旋转木马（一种游乐设备）。
1.1
- figurative a continuous cycle of activities or events, especially when perceived as having no purpose or producing no result〈喻〉（尤指无目的或无结果的）一连串的活动（或事件）; 走马灯似的更迭：
the football management merry-go-round.
足球管理层走马灯似的变换。
1.2
- as modifier Brit. denoting freight trains which deliver bulk loads (typically coal from collieries to power stations) on a continuous cycle, loading and unloading automatically while moving〈英〉定点循环列车（指货运列车自动装卸, 不停运送散装货, 尤指将煤从矿区运往发电厂）。