v.place (flax, hemp, or jute) in liquid so as to promote loosening of the fibers form the woody tissue
同义词：ret
英汉双解大词典
ret/rɛt/
1.
V（动词）
to moisten or soak (flax, hemp, jute, etc) to promote bacterial action in order to facilitate separation of the fibres from the woody tissue by beating (亚麻、黄麻、棕榈等)浸水使柔软