单词	spare time activities
释义	spare time activities 课余活动
随便看	concentric circle sign concentric circles method concentric circles of culture concentric circles theory Concentric circles were made in the water concentric circular die concentric circular screen concentric circular winding concentric city concentric cleavage concentric cluster concentric clustering scheme concentric coat concentric coating concentric coil concentric coils concentric column concentric compound trommel concentric, compressor stage concentric conductor concentric conics concentric cylinder muffler concentric-cylinder rheometer concentric cylinder rotation viscometry concentric cylinders