無聊人無聊事
我好無聊哦！誰能解悶咧？無聊做什麼？當然是上網繼續無聊把‘病毒’散播開來…… 哇！個個都無聊，我成功了……
2013-11-21
Nice cross section of a door lock
Simply amazed by how simple the mechanism of a lock can be!
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