one and only是什么意思

one and only 英[wʌn ænd ˈəunli] 美[wʌn ənd ˈonli] adj. 唯一的; [例句]I sent them more than 6,000 cartoons before I had my one and only acceptance by them我寄给他们6,000多幅漫画，最后才有1幅得以采用。