be quite casual; have good manners; natural and at ease (/graceful/unrestrained); poised and dignified
? 她居然～答道：“可不是，干脆不理就得了； 你瞧著吧，明天還是照樣會(huì)冷的?！?(《茅盾文集》 Ⅴ222—290) Her reply was quite casual. “Yes,indeed. The best thing to do is just ignore it. Mark my words—tomorrow will be cold as usual.”
落落大方
natural and graceful; unrestrained and
在對(duì)外工作中應(yīng)不卑不亢，～。In the conduct of foreign affairs,one must be graceful in style,neither haughty nor humble.
落落大方luò luò dà fānɡ
落落：坦率、開(kāi)朗；大方：不拘謹(jǐn)。形容言談舉止自然灑脫得體。natural and graceful, nature and at ease, be liberal and dignified