(pl. -os) ［mass noun］
1
- a material made up of a mixture of different substances混合材料。
2
- （亦作compo rations）Brit. a supply of food designed to last a specified number of man-days and made up of various tinned items carried in a large pack〈英〉（可维持几个工作日、由各种罐装食品组成的）食品包, 干粮。
词源
early 19th cent.: abbreviation.