其实就是在说:一个人死去，并且被埋葬了!Even though he's now six feet under， his music has cast a significant influence on generations.
这是一种表达团队合作和互相照顾的方式，通常在危险或高压环境下使用。In the olden days， misbehaving students might receive “six of the best” with a cane as a form of discipline。
这个词儿其实不算是熟词偏义了，《剑桥词典》对它的解释为:not as good as the best and therefore not wanted as much. 因此大家可以直接理解为“次优的”。
