May Day is a festival to celebrate the start of summer.

五一节是庆祝夏季开始的节日。

Beginning of Summer marks the start of summer.

立夏标志着夏天的开始。

Summer Solstice marks the official start of summer.

夏至标志着夏天的正式开始。

It is casually considered the start of summer.

它一般也被认为是夏天的开始。

June—the start of summer—was cold this year.

六月—夏天的开始—但今年很冷。

The Jefferson School District has postponed the start of summer school.

该杰弗逊学区已推迟开始的暑期学校.

Now that the spring equinox is behind us, it's time to start thinking about how you're going to commemorate the start of summer.

现在春季已经远去，夏天即将开始，应该思考一下如何庆祝这个热情似火的季节的来临了。

In the United States, Memorial Day is May 25, a popular holiday, for it's the unofficial start of summer.

在美国，5月25日是阵亡将士纪念日，是个受欢迎的节假日，人们把它视作夏季的开始。