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Chiⁿ-á

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Chiⁿ-á sī chi̍t lūi saⁿ-kak-hêng ê ke-s, hâm chi̍t pêng chhu-bīn, ē-tàng ēng-lâi phòa hun mi̍h-kiāⁿ. I tī bu̍t-lí-ha̍k siōng sǹg sī chi̍t khoán tan-sûn ki-hâi (simple machine).