schoolyard network园区网络;校园网
My Schoolyard我的校园
Schoolyard Habitats校园自然环境区
schoolyard tranquilization校园稳定
schoolyard afforestation校园绿化
schoolyard net校园网
college schoolyard大学校园
Elsted Schoolyard伊斯特校园改建工程
middle schoolyard中学校园
N-COUNT（可数名词） The schoolyard is the large open area with a hard surface just outside a school building, where the schoolchildren can play and do other activities. 操场 [usu 'the' N in sing]
...the sound of the kids in the schoolyard.
...操场上孩子们的叫喊声。