Senses
一发/ 一發 even more
even more; increasingly; more and more; same as 越发
一发/ 一發 all together
all together; at the same time; collectively
一发/ 一發 simply
simply; just; might as well; used when deciding to do something extra since one is doing it anyway; same as 索性
一发/ 一發 once started
once started; once broken out; used of a situation that has already begun to develop and cannot be easily stopped
一发/ 一發 one shot
one shot; one round of ammunition; to fire once