真题例句：

• This generated little commerce for downtown businesses in the evenings, which made business and generating tax revenue for municipal upkeep difficult.

  这使得市中心的商业在晚上几乎没有产生商业活动，这导致商业和税收收入难以维持市政运营。

  [2017年 CET6 阅读理解C]

真题例句：

• Fewer federal funds today are going towards the agency's other work — such as forest conservation, cultural resources management, and infrastructure upkeep.

  如今，用于该机构其他工作的联邦资金越来越少，比如森林保护、文化资源管理和基础设施维护。

  [2017年 英语二 阅读理解A]