讀樂樂：變成隱形如何是好？

https://schoolchoice.hk/zh-hant/%e8%ae%80%e6%a8%82%e6%a8%82%ef%bc%9a%e8%ae%8a%e6%88%90%e9%9a%b1%e5%bd%a2%e5%a6%82%e4%bd%95%e6%98%af%e5%a5%bd%ef%bc%9f