做一套眼保健操
(→_→) (↑_ ↑) (←_←) (↓_↓) (→_→)(↑_↑)(←_←)(↓_↓) (→_→)(↑_↑)(→_→)(↑_↑)(←_←) (→_←)(↑_↓) (↓_↑) (↑_↓) (←_→)(↓_↑) (→_←)(←_→)(↓_↑) (→_←)
(→_→) (↑_ ↑) (←_←) (↓_↓) (→_→)(↑_↑)(←_←)(↓_↓) (→_→)(↑_↑)(→_→)(↑_↑)(←_←) (→_←)(↑_↓) (↓_↑) (↑_↓) (←_→)(↓_↑) (→_←)(←_→)(↓_↑) (→_←)