to improve a situation or make something successful again
改善情况或使某事再次成功 (gǎishàn qíngkuàng huò shǐ mǒu shì zàicì chénggōng)
"The new leader helped turn around the company’s declining performance."
"新领导帮助扭转了公司下降的业绩。" (Xīn lǐngdǎo bāngzhù **niǔzhuǎn** le gōngsī xiàjiàng de yèjī.)
