Air fares are more expensive during the summer holiday.

暑假期间机票价格较贵

During his summer holiday he visited Russia.

暑假期间他游览了俄罗斯。

Many skiers are happy to forego a summer holiday to go skiing.

许多滑雪者乐于放弃暑假去滑雪。

Memorial Day weekend marks the kick-off of the summer holiday season.

周末的阵亡将士纪念日标志着暑假的开始。

During the past few years the university has staggered the summer holiday periods for students.

在过去几年里该大学已经把学生的暑假时间错开了。

The idea of traveling to Nanjing on summer holiday sounds practical.

暑假去南京旅游的主意听起来是可行的。