清洁：身体、衣服及住所，力求整洁。

现实是，你知道，作为一个黑人，巴拉克去趟加油站都可能被开枪打死。

A baker's hands are their most valuable tools, guided by experience and intuition.

The only way to understand life is to live it.

我们必须将土壤健康视为粮食安全的基础。