◎ 既来之，则安之 jì lái zhī,zé ān zhī
[since we are here,we may as well stay and make the best of it;now that we have come,let us stay and take the rough with the smooth;now you are here,you'd better stay;since this is so,it's better to accept it and enjoy it] 既已来此,那就随安于此
他果然既来之,则安之,我也只得因居之安,则资之深。——《儿女英雄传》
本指安抚远方来的人，使其安居乐业。语出《论语．季氏》：「远人不服，则修文德以来之。既来之，则安之。」后指既然已经来了，就且安下心来。元．王实甫《西厢记．第二本．第二折》：「（末云）『既来之，则安之。』请书房内说话。」
英语 Since they have come, we should make them comfortable (idiom). Since we're here, take it easy., Since this is so, we should accept it., Now we have come, let's stay and take the rough with the smooth., If you can't do anything to prevent it, you might as well sit back and enjoy it.
既來之，則安之 成语解释
【解释】既：已经；来之：使之来；安之：使之安。原意是既然把他们招抚来，就要把他们安顿下来。后指既然来了，就要在这里安下心来。
【出处】《论语·季氏》：“夫如是，故远人不服，则修文德以来之。既来之，则安之。”
【示例】但～，姑且住下再说。 ◎清·吴趼人《二十年目睹之怪现状》第一○二回
【反义词】来无影，去无踪
【语法】复句式；作状语；表示既然来了就要安心