singlecordn.单线塞绳singleadj.单一的；单个的；特指某人或某物；单身的；单人的；单程的n.单程票；单曲；单人房间；单身者；<美>一元纸币；(网球)单打比赛；(板球)一分打；(棒球)一垒打v.挑选(一个)single-disc winding单盘式绕组single site principle单局制single pulse selector脉冲单选器single-cell furnace单室炉single-column lathe单柱立式车床single-orifice type单孔型single-address code单地址码single-shaft engine单轴发动机single layer net hull单层网壳single chip processor单片处理机

1. There the cells divide rapidly to form a single layer of skin.
   细胞在其中迅速分裂，并形成一个单层的皮肤。
2. We asked for a double?carton, but it came in a single?carton.
   我们要求用双层的纸板盒送达时却是单层的纸板盒。