挥汗

huī hàn gōng zuò

挥汗工作

work up a sweat

zài xún zhǎo guāng míng yǔ zhēn lǐ de dào lù shang tā men yī zhí zài liú xuè huī hàn sǎ lèi

在寻找光明与真理的道路上，他们一直在流血、挥汗、洒泪。

In the search for light and truth, they have been bleeding, sweating and weeping.