他穿着马裤和长筒靴，靴上带着马刺。He was wearing riding pants, high boots, and spurs.他用马刺策马.He dug in his spurs.他以马鞭及马刺策马前进.With whip and spur he urged his horse onward....
Once its impurities had settled, the oil could be graded.一旦杂质沉淀下去，油就可以分级了。Passes are graded from "A" down to "E".及格分为A到E几等。The texts should be graded in order of difficulty.课文要按难易程度编排....