辛勤

尽管前行的道路十分辛勤，但科研人员从未动摇攻关的决心。

jǐn guǎn qián xíng de dào lù shí fēn xīn qín, dàn kē yán rén yuán cóng wèi dòng yáo gōng guān de jué xīn.

Although the road ahead is extremely difficult, researchers have never wavered in their determination to solve the problem.

整洁明亮、井然有序的现代化城市市容市貌，无不浸透着数十万一线环卫工人、市政养护职工早出晚归、无怨无悔的辛勤汗水。

zhěng jié míng liàng, jǐng rán yǒu xù de xiàn dài huà chéng shì shì róng shì mào, wú bù jìn tòu zhāo shù shí wàn yī xiàn huán wèi gōng rén, shì zhèng yǎng hù zhí gōng zǎo chū wǎn guī, wú yuàn wú huǐ de xīn qín hàn shuǐ.

The clean, bright and orderly appearance of the modern city is reflected in the hard work of hundreds of thousands of front-line sanitation workers and municipal maintenance workers who leave early and come home late without any regrets.