Summer hours were long, winter ones short; only at the spring and autumn equinoxes were the hours of daylight and darkness equal.

夏天的时间长，冬天的时间短；只有在春秋分点，白天和黑夜的时间才相等。

youdao

"Summer hours" are a long-established institution in the US.

“夏令时”制度在美国已实施很长时间。

youdao

The summer after 7th grade, students spend three weeks on a college campus studying advanced math for seven hours a day.

七年级后的那个夏天，学生们要在大学校园里待上三周，每天学习七个小时的高等数学。

youdao

The two sides struggled for hours in the hot summer sun.

VOA: special.2009.09.24

During the summer, the most dangerous period for U-V rays in the United States mainland is between the hours of ten in the morning and four in the afternoon.

VOA: special.2010.07.06

"My friends and I have made a list of things we want to do over the summer. Different places to travel, to get away to, maybe a beach a few hours away.

VOA: special.2010.06.18

In a California test that ran from 2003 through 2005, the average customer reduced his usage by 13% during the hottest summer hours when rates were five times higher.

FORBES: What Would You Pay To Stay Cool?

Our school library was open during summer school hours allowing students daily access to checking out books.

WHITEHOUSE: Finding Opportunities to Make a Difference

In 1995, a trial judge awarded the Troxels visitation of one weekend per month, one weekend during the summer and four hours on each of the children's birthdays.

CNN: The Troxels and some of their grandchildren