Open drainage

open ['opən]

adj. 敞开的，开着的;公开的，公共的;坦率的;有议论余地的; vt.& vi. （打）开;开始;睁开;启动; n. 户外，野外;空旷;公开; vi. 使打开;展示，显现; vt. 张开;开放;开张营业;为（建筑物）揭幕;

drainage ['drenɪdʒ]

n. 排水，放水;排水系统;排走物，废水;排水区域;

drain 排干+age状态，总称 →排水

Could I trouble you for directions?

打扰了，我想问问路。

The moon eclipses the sun.

月亮遮住了太阳。

when they would be capable of providing information about traffic jams and suggesting alternative routes, when they would be used in hospitals to help doctors to diagnose illnesses, when they would relieve office workers and accountants of dull, repetitiv

计算机可以使办公室人员和会计免除那些枯燥、重复的劳动。