处理业务中所有与现金相关的活动。利用可轻松转换为现金的短期资产，例如有价证券、商业票据和短期政府债券以及国库券。 Taking care of all cash-related activities in the business. Utilize short-term assets that can be easily convertible into�cash, such as marketable securities, commercial paper and short-term government bonds, and treasury bills.