一旦杂质沉淀下去，油就可以分级了。Once its impurities had settled, the oil could be graded.将在统一费用和分级费用之间作出选择。The choice will be between a flat-rate or a banded charge.木材按厚度分级.The timber is graded according to its thickness....
培植需要肥沃土壤和明亮光照.The plants need a fertile soil and bright illumination.这些植物非常娇嫩,只能在温室里培植.These plants are very delicate and can only grow in a hothouse.开始时,他精心培植着那个花园.He nursed the garden carefully at the beginning....
They ate, as they usually did, in the kitchen.像平常一样，他们是在厨房吃的饭。The volunteers kept a record of everything they ate for a week.志愿者记录下他们一周所吃的所有食物。Ray and I ate our meal and reminisced about the trip.雷和我吃着饭，回忆起那次旅行。...