use with caution是什么意思

use with caution 慎用;
caution 英[ˈkɔ:ʃn] 美[ˈkɔʃən]
n. 警告; 小心; 〈英〉担保; 〈口〉须警惕的事或人;
vt. 警告; 提醒;
[例句]Extreme caution should be exercised when buyi