unreasonable

It is unreasonable to expect a high school student to solve a professional-level physics problem in five minutes.

(Chinese) 指望一名高中生在五分钟内解出专业级的物理题是不合理的。

The store's policy of not allowing any returns, even for damaged items, was considered unreasonable.

(Chinese) 该商店不允许任何退货的政策（即使是对损坏物品）被认为是不合理的。