alternating

1.备用的,补充的;预备的,候补的

2.〈美俚〉副,代理的

3.交替的,轮流的

4.【植】交错的,互生的

5.隔一的,间隔的

1.〈美〉(委员)代理人

2.替换物

1.使交替,使轮流

2.交替,轮流

3.【电】交流

1.happening or coming one after another, in a regular pattern

2.happening on one day, week, etc. but not on the day, week, etc., that immediately follows

3.allowing you to choose a different plan, thing, or situation from one you already have

1.someone who takes the place of another person, especially in sports

1.if one thing alternates with another, they happen or come one after another, in a regular pattern that keeps being repeated; if someone or something alternates between two things, they keep changing between them

2.to choose one thing or situation and then another, and keep repeating that pattern