[mass noun]the action or process of something slipping or subsiding; the amount or extent of this 滑动,下沉;滑程,下沉幅度 £16 million has been spent on cracks and slippage. 已经在下沉堵漏上花了1,600万英镑。 ■failure to meet a standard or deadline; the extent of this 不合标准;延误;延误程度 slippage on any job will entail slippage on the overall project. 任何一件事的延误都会影响整个计划进程。