As humans 'in-the-world', we are already experts at going about everyday life, at dealing with the subtleties of every particular situation; that is why everyday life seems so obvious.
作为“在世之中”的人类，我们已经是应付日常生活的专家，处理每一个特定情况的微妙之处；这就是为什么日常生活看起来如此显而易见的原因。