/ˌɔːltəˈneɪʃən/ n.交替；轮流
The alternation of sun and snow continued for the rest of our holiday.我们剩余的假期里依旧时而天晴, 时而下雪。
the alternation of crops with fields left lying fallow让田地得以休耕的作物轮作
an alternation between sth and sthoran alternation from sth to sth…与…的交替(或轮流)
There is an alternation between more traditional narrative and a stream of consciousness technique.时而使用更传统的叙述方式, 时而使用意识流手法。
an alternation from tedious reality to liberating romance单调乏味的现实和自由浪漫的爱情的交替