敲骨吸髓[qiāo gǔ xī suǐ]
词典suck the lifeblood of：敲骨吸髓。
词典danci.911cha.com
词典beating the bones and sucking out their marrow -- extreme exploitation
词典bleed the (poor) people white
词典break the bones and suck the marrow：敲骨吸髓。
敲骨吸髓[qiāo gǔ xī suǐ]
suck the lifeblood of; beating the bones and sucking out their marrow -- extreme exploitation;bleed the (poor) people white; break the bones and suck the marrow; cruel, bloodsucking exploitation;milk sb. dry; wring every ounce of sweat and blood out of sb.
1. bleed sb. white：雪白 as white as snow | 敲骨吸髓 bleed sb. white | 颠倒是非 call white black