蠡蚌闭户: the mussel and the oyster close their shells.; the wise man retires within himself
管蠡之见: the view through a tube and the measure with a calabash -- limited outlook
娌见妯娌蠡动: eat wood nearly break by corroding or wearing
沟: 名词1.(挖掘的水道或工事) channel; ditch; gutter; trench 短语和例子交通沟 communication trench; 排水沟 drainage ditch; drain; 阴沟 drain; sewer; 挖一道沟 dig a ditch; 沟里的水不很清洁。 the water in the ditch is not very clea
