Requiring children to save parts of their allowance can also open the door to future saving investing. 要求孩子存起他们一部分的零花钱可以为他们将来的存款投资做铺垫. Failing to pay homage to free trade would be a very bad sign – and might open the door to much more rampant protectionism. 未能向自由贸易表达敬意,将是十分糟糕的征兆——可能为更加猖獗的保护主义开启方便之门. The armistice opened the door to peace talks
