Manage petty cash and keep books for cash on hand and cash at bank.

管理小额现金流，并登记手头和银行的现金。

youdao

I love books because they help me keep up with things I need to know for my profession.

我爱书，因为它们帮助我跟上我的职业需要知道的事情。

youdao

So how do I display or otherwise admire all these books I keep buying for the Kindle?

所以我如何显示异或欣赏我不断为Kindle买的所有这些书籍呢？

youdao

They're rules for how a company should keep its books so that there's some regularity and standards in how accounting is done.

准则规范了公司如何记账,并建立了一套,会计规范和标准

耶鲁公开课 - 金融市场课程节选

The letter also mentions loaning the book out, which could mean he felt a need to keep his books clean for other readers (this is perhaps a more persuasive argument).

FORBES: A Library Thomas Jefferson Would Love

We'll keep an eye out for good books about language, and mention them when we can.

ECONOMIST: Language

Publishing houses keep relearning this lesson, as editors overspend for the rights to books that match their own appetites, losing track of mainstream American tastes.

FORBES: What Facebook Forgot When It Created Graph Search