Precedent
于是(Then)我给他发消息说只是开个打趣而已,而且只此一次,下不为例(Precedent),才算把这个事情给了了。如果你将个人兴趣和自己的工作结合在一起,那么你的工作将不会显得辛苦和单调。
not to be repeated
... 细则 by-law 下不为例 not to be taken as a precedent; not to be repeated 下放权力给 delegate the management of(to) ...
It won't happen again
... It will do you good。这会对你有好处。 It won't happen again。下不为例。 It won't take much time。不会发很多时间的。 ...
once and for all
... not at all根本不 once and for all只此一次,下不为例 among end总地来说 ...
下不为例,下次不可以再这样做。表示只通融这一次。