casual friend的用法和樣例：
例句
- But of casual friends I have only an incomplete impression, an impression gained from a handclasp, from spoken words which I take from their lips with my finger tips, or which they tap into the palm of my hand.
而對那些偶然的朋友我只有一個(gè)不完全的印象，一種我從下面方式中得到的印象：一次握手，我的指尖從他們的雙唇上感觸到的他們所說(shuō)的話(huà)，或者是他們在我兩手掌上輕輕地拍撫。
