By the way, in British English " mustache, " like a lot of words, is spelled slightly differently;there's an " o" in the word – (mou) instead of just (mu).

顺说一下， 在英式英语中， “mustache” 和多词一样，拼写略有不； 词中有一个“o” ——(mou) 而不是 (mu)。