i guess you are in nursing program right?9 ?: E" I( W @
do not use translator. some of them do not make sense.9 g9 r. k0 J, w; v) r+ k1 L
try to use english "answer" website. it might help 9 H6 \2 A* _" [7 k/ I2 ^i have one but i never use it. well, leave me messages on "duan xiao xi'