深海生物会发光,是为了吸引猎物或躲避天敌。Shēnhǎi shēngwù huì fāguāng, shì wèile xīyǐn lièwù huò duǒbì tiāndí.Deep-sea creatures emit light in order to attract prey or avoid natural enemies.
夜里,萤火虫在草丛中发光,像一颗颗小星星。Yè lǐ, yínghuǒchóng zài cǎocóng zhōng fāguāng, xiàng yì kē kē xiǎo xīngxing.At night, fireflies glow in the grass like tiny stars.
这块石头在黑暗里会发光,孩子们觉得很神奇。Zhè kuài shítou zài hēi'àn lǐ huì fāguāng, háizimen juéde hěn shénqí.This stone glows in the dark, and the children find it magical.