idiom · accepting any available option or help without being selective when in an urgent or desperate situation; beggars can't be choosers

公司面临破产，他饥不择食地接受了那笔条件极其苛刻的贷款。

idiom · eating whatever is available without being picky when extremely hungry

他已经饿了整整两天，现在饥不择食，连冰冷的剩菜也吃得津津有味。