I'm in class five or nine

五九班───Class 59;我───I

The study included 23 patients (mean age 59 years) with NYHA class II or III CHF secondary to ischemic heart disease (ejection fraction 37%).───这项研究纳入23例(平均年龄59岁)缺血性心脏病(射血分数37%)并发慢性心力衰竭nyha心功能分级II级或II I级的病人。

They're also a study in class mobility: 59% come from lower-middle-class or blue-collar families, and almost half hold advanced degrees.───这项研究还调查了社会地位的流动性问题，结果显示：59%的人出身于中产阶级的下层或蓝领家庭，几乎一半的人拥有高等学历。

By 2025, McKinsey predicts consumption will be dominated by the middle class, to the tune of 59%, and the rich, accounting for 20%.───到2025年，麦肯锡预测中产阶级将会主导消费，达到59%，富人为20%。

Currently 307 projects in the first class and luxury class category with a total of 59, 500 rooms are planned.───目前，有307个高星级、奢华酒店（共59500间客房）正在筹建中。