标题: 阅读里的时间概念和一个句子，搞不懂... [打印本页] 作者: 落音雨 时间: 2017-12-5 20:08 标题: 阅读里的时间概念和一个句子，搞不懂... in the last five years
in the preceding five years
in the previous five years
大神啥区别哇？
In these tropical regions, diurnal(daytime) visitors to columnar cactus flowers are ineffective pollinators because, by sunrise,（？？） the flowers' stigmas （柱头）become unreceptive or the flowers close.
