Is Ubuntu flawless?

　　Ubuntu是完美無缺的嗎？

　　He has spent years in America, and speaks flawless English.

　　他在美國居住了幾年并能說一口流利的英語。

　　This wonderful boyfriend was flawless — who cared about his pennilessness?

　　這個(gè)出色的男朋友簡直是完美無瑕的----誰在乎他一窮二白，身無分文呢？