陡然

dǒu rán jiàng dī

陡然降低

fall suddenly

tiān qì dǒu rán biàn chà

天气陡然变差。

The weather suddenly turned bad.

dǒu rán shēng gāo

陡然升高

rise abruptly

xíng shì dǒu rán yán jùn qi lai

形势陡然严峻起来。

The situation became grim all of a sudden.

dǒu rán xǐng wù

陡然醒悟

suddenly realize

tā dǒu rán yì shí dào tā nà shuāng zhàn lán de yǎn jing zhèng rè qiè de zhù shì zhe zì jǐ jiāng tā shàng xià yī lǎn wú yí de kàn zài yǎn li

她陡然意识到他那双湛蓝的眼睛正热切地注视着自己，将她上下一览无遗地看在眼里。

She suddenly became aware of his keen blue eyes upon her, taking her all in.

dào lù dǒu rán xià xié

道路陡然下斜。

The road dipped suddenly.