黑兽有无码吗:round and round 同up and down or 'front and back'or'left and right

round and round 同up and down or 'front and back'or'left and right the line walks round and round in the cage round & around Round up the usual suspects.这句话什么意思? what goes round the world and stays in the corner not exact in round 求ROUND ROBIN汉语 关于round函数 isp--adslmodem--round-computer doha round是什么啊