six feet under片語KK [sɪks fit ˋʌndɚ] /sɪks fit ˈʌndɚ/發音片語1死了、入土、長眠地下口語He said he'd keep that secret until he was six feet under.他說這個秘密他會帶進棺材裡。2已埋葬、已下葬口語Both of her grandparents have been six feet under for years.她的祖父母已經入土多年了。