2017英语六级写作过关万能模板：表起伏
来源 :中华考试网 2017-05-20
中2017英语六级写作过关万能模板：表起伏
起伏
1.…to go up and down …起伏不定
eg. The strike rate went up and down during the period from 1952 to 1967.
2.There be ups and downs …有起有伏
eg. Between 1972 and 1979, there were several ups and downs in (某方面).