飛機上的窗戶為什麼是圓形的？飛機上的奇妙冷知識你知道幾個？ Tags: 0 comments 1 likes 0 shares Share this: 旅行·享受 About author not provided 人生匆匆几十年，世界那么大你去过哪几个地方呢？再不旅行你就老了！想知道更多旅游资讯的你快来看看吧！Life is short, the world is big, how many places you have visited? Go travel before you get old!! 131739 followers 73851 likes View all posts