Tā bùdébù biànxiàn bùfen gǔpiào lái zhīfù yīliáo fèi.
He had to liquidate some stocks to pay medical bills.
Tips
register
Two registers: (1) finance/legal — convert an asset to cash (originally Buddhist 'manifest, take physical form'); (2) internet business — monetize traffic, fans, IP. Internet sense is the dominant one in current usage.
usage
Pattern: 把 X 变现 ('cash in X') or X 变现 used absolutely. Stock phrases: 流量变现 (monetize traffic), 知识变现 (monetize expertise), 粉丝变现 (monetize fans).