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....
Always buy a heater with thermostat control to save on running costs.始终购买可调温度的取暖器以节省使用成本。"The heater works."—"What heater?".。。“加热器起作用了。”——“什么加热器？”There's an electric heater in the bedroom.卧室里有个电暖器。...
此十四个月大之女孩患嗜伊红性脑膜炎,并有左眼前房虫体寄生,而致眼内炎及脉络网膜炎.Sixty - eight larvae of angiostrongylus cantonesis was found in CSF by lumber tapping.方法对与术后眼内炎有关的文献加以分析,整理.Methods: The literature concerning endophthalmitis after operation were...