Keep neatness in the office. Clean the desktop and floor once a day. Make a thorough clearing once a week.
保持办公室内整洁。每天打扫一次办公桌面、地面，每周彻底清扫一次卫生。
3
One other reason for exchanges to own their own clearing houses, says Antonio Riera, of the Boston Consulting Group, is so that they can offer the back-office services their users are clamouring for.