Precisely means accurately and exactly.
exactly , accurately
imprecisely , inaccurately
Nobody knows precisely how many people are still living in the camp.
没有人准确地知道有多少人还生活在那个营地。
The first bell rang at precisely 10:29 am.
第一遍铃声在上午10:29准时响起。
You can use precisely to emphasize that a reason or fact is the only important one there is, or that it is obvious.
Children come to zoos precisely to see captive animals.
孩子们到动物园来正是为了看那些被关起来的动物。
That is precisely the result the system is designed to produce.
那正是系统想要的结果。
You can say 'precisely' to confirm in an emphatic way that what someone has just said is true.
'All I did was write the truth.'—'Precisely! Now everyone knows.'
“我所做的就是把真相写出来。” “没错!现在大家都知道了。”