sheathe obj Fi:T v [T] 把…插入鞘;包，覆盖 She sheathed the knife (= put it back inside its sheath). 她把刀插回鞘里。 The ships'hulls were sheathed in/with copper (= covered with COPPER as a protection). 船身包着紫铜。 The landscape was sheathed (= covered) in ice. 景色为冰雪所覆盖。