retainvt.保持;保留;记住;聘请
retaining pawl制动爪,止爪
retaining wail围护墙
retaining scre固位螺丝
retained stone残留结石
retaining band外罩
retaining time保留时间
retaining pile支护桩
retaining nest定位槽
retaining works挡水工程,挡水建筑物
retain a secret保守秘密