为什么trousers,pants,shorts,glasses表示又一时不是another one而是another

为什么trousers,pants,shorts,glasses表示又一时不是another one而是another 为什么不是have one more try ,而是have another try pants、shorts、trousers单复数 pants shorts trousers 的区别 pants和shorts以及trousers的区别是什么, 求翻译：may be the shorts and shirt one size to another size 为什么是One of his feet is bigger than the other不是~than another One another,another one 的区别 one another 与 another one的区别? Another one和one another 区别 these trousers are too small,can you show me another one or Another