haven't; hasn't; doesn't exist; to not have; to not be[cedict]
事先
shì xiānㄕˋ ㄒㄧㄢ
in advance; before the event; beforehand; prior[cedict]
通知
tōng zhīㄊㄨㄥ ㄓ
to notify; to inform; notice; notification[cedict]
我们
wǒ menㄨㄛˇ ㄇㄣ˙
we; us; ourselves; our[cedict]
走
zǒuㄗㄡˇ
to walk; to go; to run; to move (of vehicle); to visit; to leave; to go away; to die (euph.); from; through; away (in compound verbs, such as 撤走); to change (shape, form, meaning)[cedict]