serve是伺候的意思，例如侍应生给你上了道菜, the waiter just served you a dish.
offer 是（想）给/送/请的意思，例如那位先生送了被饮料给你， that man offered a drink to you.老板提出要给你加薪，the boss offered to raise your pay
水利万物而不争,
而万物莫能与之争。
