关于流动性陷阱中债券和利率的关系.

关于流动性陷阱中债券和利率的关系.
under certain liquidity preference an increase of the money supply by
*** will lower the equilibrium rate of interest from re to re .this is because
that people will purchase bonds with their extra money as they think they have much
more money than they’d like to keep after an increase of money supply.as the
demand for bonds increases,the price of bonds will rise which will push down
interest rates.so the fall of interest rates will stimulate investment demand and
increase employment and output through multiple effect.
1.里面有一句话是“ the price of bonds will rise which will push down interest rates."请问债券价格的上升是怎么降低利率的?
2." so the fall of interest rates will stimulate investment demand and increase employment and output through multiple effect." 里面的投资是什么样的投资?购买债券本身算不算投资?
3.里面提到的利率 是债券的利率还是什么利率?
我觉得混乱的原因是流动性陷阱出现的时候利率是很低的,利率低就应该刺激投资,而在流动性陷阱中却不会出现投资增加?是不是因为凯恩斯的投机性需求里面人们储存资产的方式只有两种,手持现金和购买债券,而里面说的投资就指的是购买债券?这样的话利率也值得是债券利率?