i guess you are in nursing program right?3 j# R/ o3 }: g" A! r
do not use translator. some of them do not make sense.: _( L8 D7 h: o2 S; H$ R
try to use english "answer" website. it might help% [8 h M% y# `3 b" X
i have one but i never use it. well, leave me messages on "duan xiao xi'