Coal is relatively expensive but its redeeming feature is that it is in plentiful supply.煤相对比较贵，但是它的可取之处是供应充足。Drugs are freely available in the city.城市里药品供应充足。Make sure you have an adequate supply of brochures.确保宣传小册子供应充足。Oranges are plentiful this summer.今年夏天橙子供应充足。There is an abundant supply of cheap labour.廉价劳动力供应充足。