< Pinyin
Sight is one of the senses. Having sight means to be able to see. Seeing gives animals knowledge of the world. Some simple animals can only tell light from dark, but with vertebrates, the visual system is able to form images.
Shìjué shì gǎnjué zhīyī. Yǒu shìjué jiù néng kàn. Shìjué shǐ dòngwù rènshí shìjiè, yǒuxiē jiǎndān dòngwù zhǐnéng biànbié guāng-àn, dàn jǐzhuīdòngwù néng kàndào túxiàng.
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