ad. 开个口使水流出

a. 开口的

[ adj ]
of a cask or barrel
<adj.all>
the cask was set abroach

Abroach \A*broach"\, v. t. [OE. abrochen, OF. abrochier. See
{Broach}.]
To set abroach; to let out, as liquor; to broach; to tap.
[Obs.] --Chaucer.


Abroach \A*broach"\, adv. [Pref. a- + broach.]
1. Broached; in a condition for letting out or yielding
liquor, as a cask which is tapped.

Hogsheads of ale were set abroach. --Sir W.
Scott.

2. Hence: In a state to be diffused or propagated; afoot;
astir. ``Mischiefs that I set abroach.'' --Shak.