刻漏
词典water clock：漏壶；水钟，滴漏；漏刻。
1. 邮的设施都很简陋，但是为了便于传书准确方便，各邮还应该有计时设备&刻漏。 Postal facilities are very primitive, but in order to facilitate accurate, the email should also have a timing device-the leak.