Yāngháng xiàng shìchǎng shìfàng le dàliàng liúdòngxìng.
The central bank injected a large amount of liquidity into the market.
Tips
usage
In finance, 流动性 is the standard translation of 'liquidity' - cash or easily-sold assets. In other contexts it means mobility: 人口流动性 (population mobility), 劳动力流动性 (labor mobility).