单

• The base line can be set out as a single or double chain .
  基线可作为一条单链系或双链系。
• Stranded wire is usually preferred to solid wire .
  最好是用多股绞合导线，而不用单股导线。
• They keep hens in a lean-to at the end of the garden .
  他们在园子尽头处的单坡棚里养母鸡。
• It will speed up delivery if you complete the official order-form .
  填妥定单便于尽早送货。
• The computer is even able to send out overdue notices .
  计算机甚至还能发出图书逾期通知单。
• After paying all the bills , i found myself 5 dollars .
  付清所有帐单后，我知道共花了5美元。
• Overdue notices are usually produced on a line-printer .
  过期通知单往往在行式打印机上制作。
• Place plastic sheet, then bath blanket, under the child .
  在小儿身下铺上塑料单，上面加浴毯。