• 单人床单

single hop单段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 round copper wire圆铜单线Single machine scheduing单机排序single-channel FM unit单导程调频装置single fisherman rs knot交织结singlechip microcomputer单片机single-cycle infection单周期感染single-pass stabilizer单程土壤稳定机single-stage converter单级液力变扭器Single dimensional guide单维度取向single cylinder flameout单缸熄火

1. The letter was written on a single sheet of paper.
   这封信只用一张纸写成。