what is "summer class" and "summer session"

Where is the Summer Palace?And what mean about the Summer Pa Summer is muggy and warm. summer：It is very hot and often rains in summer. what+are+Sam+and+Summer+doing+是什么意思 Summer is What is the climate like in summer? 英语填空1.（ ）the ( )like in summer?It is ( )and( ).What is weath summer is hot and the days are Summer is b_____ spring and autumn. summer Summer, the weather is summer and dry 还是 the weather are summer and