堆房里有球棍的碰撞声,操场上传未了钝重的击球声和喊叫声.Hockeysticks rattled in the lumberroom : the hollow knock of a ball and calls from the field.双方用木制球棍将球在场上推进.Teams attempt to advance the ball down the field with their wooden sticks.曲棍球球棍有两侧,左...
Welcome to the Bio - geomagnetism Group of the PGL in Beijing!欢迎来到北京生物地磁学实验室!The earth is surrounded by the geomagnetism. The geomagnetism is stable and has some regulation.地球磁场遍布整个地球, 而且相对比较稳定,并有一定的规律可循....