cash drain的用法和样例：
例句
- Cash payments for purchases are the basic and important item of cash outflows from operating activities.
购货支付的现金是经营活动产生的现金流出中的一个基本的和重要的项目。 - The main purpose of the statement of cash flow is to report the cash inflows and the cash outflows during an accounting period.
现金流量表的主要目的是报告某一会计期间现金流入和现金流出的情况。
