alternate

alternate
verb
  1. [no obj.]occur in turn repeatedly
    交替
    bouts of depression alternate with periods of elation.
    经济繁荣期和萧条期的交替出现。
    [as adj. alternating]a season of alternating hot days and cool nights.
    白天热晚上凉的季节。
    ■[with obj.]do or perform in turn repeatedly
    轮流做
    some adults who wish to alternate work with education.
    一些希望能把工作和学习轮流进行的成年人。
    ■(of a thing) change repeatedly between two contrasting conditions
    （事物）轮流，更替
    the government alternated between the Labour and Conservative parties.
    政府在工党和保守党之间轮流更替。
adjective
[attrib.]
  1. every other; every second
    间隔的；每隔一个的
    she was asked to attend on alternate days.
    她被要求隔天出席。
    ■(of two things) each following and succeeded by the other in a regular pattern
    （两者）交替的，轮流的
    alternate bouts of intense labour and of idleness.
    一会儿高强度劳动，一会儿又无所事事。
    ■(of a sequence) consisting of alternate items
    （序列）交替出现的
    ■(Botany)(of leaves or shoots) placed alternately on the two sides of the stem
    (植)（叶，芽）互生的
  2. (chiefly N. Amer.). another term for alternative
    (主 北美)。 同 alternative
    a novel set in an alternate universe.
    一部以另一空间为背景的小说。
noun
  1. (N. Amer.)a person who acts as a deputy or substitute
    (北美)替身，替代品
派生
alternately
adverb
alternation
noun
语源
  1. early 16th cent.: from Latin alternat- 'done by turns', from alternare, from alternus 'every other', from alter 'other'
用法
  1. On the use of the adjectives alternate and alternative, see usage at alternative
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