cóng / shān / dǐng / xiàng / xià / guān / chá / shí / fǔ / jiǎo / yuè / dà / shuō / míng / mù / biāo / yuè / dī

从山顶向下观察时，俯角越大，说明目标越低。

When looking down from the top of a mountain, a larger angle of depression means the target is lower.