... period of adolescence 青春期 period of aging老年期 period of attendance at school 入学期 ...
双语例句
1
With the coming maintenance periodof the aging road in China, the old asphalt pavement's recycling has become an important issue.
我国许多高速公路路面已经进入全面维修期，旧沥青路面的再生利用是一种主要养护方法。
2
Into the 21st century, our country is entering a "housing aging" period, the time of a comprehensive renovation of old housing has come.
进入21世纪以来，我国正步入一个“住宅高龄化”阶段，全面地对旧住宅进行更新改造的时期已经到来。
3
During storage or in operation the frequency of the crystal resonator will change according to the duration period, which is define as aging in crystal field.