同是UD線行隧道線, 長度卻不同
968：12.8米https://scontent-hkg3-1.xx.fbcdn.net/t31.0-8/13490715_954050741374146_6337847101072104322_o.jpg
690：12米
https://scontent-hkg3-1.xx.fbcdn.net/v/t1.0-9/13501976_954051461374074_9033559735187426027_n.jpg?oh=844aa07d0041a516d3fa26ebab21aebb&oe=580FDB88
附送：
https://scontent-hkg3-1.xx.fbcdn.net/v/t1.0-9/13495130_954051588040728_5939495062418883620_n.jpg?oh=e3ba542bb3117ce81ec75428f79b03aa&oe=57FA19D3
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