escrow
noun [ U ] law specialized uk/ˈes.krəʊ/ us/ˈes.kroʊ/
（在达成某种条件之前将钱款或财产交由第三方保管的）有待完成条件的合同（或契据）
an agreement between two people or organizations in which money or property is kept by a third person or organization until a particular condition is met
The money was placed in escrow. 履行协议期间，这笔钱暂由第三方保管。