短語詞組短語roof plummet 頂點(diǎn)對點(diǎn)器plummet to 驟降至lead plummet 鉛垂球;垂球Method plummet 鎚測法Plummet Fittings 鉛鎚配件包plummet popularity 垂直落下Penguin Plummet 企鵞跳水laser plummet 激光垂準(zhǔn)儀;激光對點(diǎn)器;雷射垂準(zhǔn)儀 返回 plummet