最后有中文不负责任心得：
网络连结如下：
https://www.worldoil.com/news/2020/6/22/deloitte-reports-continued-strain-for-sh
ale-producers-even-as-oil-prices-rise
正文开始
Deloitte reports continued strain for shale producers, even as oil prices rise
By KEVIN CROWLEY on 6/22/2020
HOUSTON (Bloomberg)