过去五年中，销售额已增长至以前的四倍。Sales have quadrupled in the last five years.过去几年中销售量较原来的增加了四倍。Sales have quintupled over the past few years.这座城市的空气污染程度曾高达可接受标准的四倍.Air pollution in the city had reached four times the acceptable level...
利用显微镜检查组织，以排除或确认癌变。The tissue is examined microscopically to rule out or confirm cancer.他们在常规体检中发现了扩散性的癌变。They found invasive cancer during a routine examination.这些观察为鉴定具有癌变潜能的组织指明了一条可能的途径.These observations suggest a po...