艰难险阻

举世闻名的中国工农红军二万五千里长征，谱写了人类历史上不畏艰难险阻的英雄史诗。

jǔ shì wén míng de zhōng guó gōng nóng hóng jūn èr wàn wǔ qiān lǐ cháng zhēng, pǔ xiě le rén lèi lì shǐ shàng bù wèi jiān nán xiǎn zǔ de yīng xióng shǐ shī.

The world-famous 25,000-mile Long March of the Chinese Workers' and Peasants' Red Army composed a heroic epic in human history that was not afraid of hardships and obstacles.

正义的事业是不可战胜的，任何艰难险阻都绝不可能把我们打倒。

zhèng yì de shì yè shì bù kě zhàn shèng de, rèn hé jiān nán xiǎn zǔ dōu jué bù kě néng bǎ wǒ men dǎ dǎo.

The cause of justice is invincible, and no difficulty or obstacle can defeat us.

几十年来无论经历多少人生风雨和艰难险阻，老一辈科学家矢志报国的赤诚初心从未改变。

jǐ shí nián lái wú lùn jīng lì duō shǎo rén shēng fēng yǔ hé jiān nán xiǎn zǔ, lǎo yī bèi kē xué jiā shǐ zhì bào guó de chì chéng chū xīn cóng wèi gǎi biàn.

No matter how many trials and hardships they have experienced in life over the past few decades, the sincere original intention of the older generation of scientists to serve the country has never changed.