■ hair

通常是不可数名词，只用单数。

• His hair is black.他的头发是黑色的。

但是也可以作为可数名词指一根根的头发。

• So why has he got two blonde hairs on his jacket?那么为什么他外套上有两根金色头发呢？

• lawful, legal 与 legitimate
• lay
• lay 与 lie
• learn
• lease
• least
• least of all
• leave
• left
• legacy
• legal
• legitimate
• lend
• lengthy
• less
• less
• less
• less 与 fewer
• let
• let alone
• let's
• let us
• level
• liability
• liability