清障

gè dì dà lì zhěng zhì hóng dào duì dòng tíng hú qū de lú wěi jìn xíng le qīng zhàng huó dòng

各地大力整治洪道，对洞庭湖区的芦苇进行了清障活动。

All regions made great efforts in clearing up flood channels, and clearing out reeds in the Dongting Lake area.

shū hé qīng zhàng xíng dòng

疏河清障行动

actions to remove obstacles from a river course

dào lù qīng zhàng chē

道路清障车

the road wrecker