内孔近似方格型，有效空间大，便于穿光、电缆。
Within hole approximate pane type, effective space big, easy to wear light, cable.
那天他穿着一套灰色薄型西服而不是平常所穿的方格运动衫。
He was wearing a grey lightweight suit as opposed to his usual check sports jacket.
那天他穿着一套灰色薄型西服而不是平常所穿的方格运动衫。
He was wearing a grey lightweight suit as opposed to his usual check sports jacket.
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