词典释义：
a thickness or layer of a folded or laminated material
（折叠或胶合材料的）一层，一层厚。
[usu. in combination]a strand of yarn or rope
一股（纱线或绳子）。
the number of multiple layers or strands of which something is made
层（数），股（数）
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the yarn can be any ply from two to eight .纱线可以是２到８股。
short for
<Bold>PLYWOOD</Bold>的简称。
[mass noun](in game theory)the number of levels at which branching occurs in a tree of possible outcomes, typically corresponding to the number of moves ahead (in chess strictly half-moves ahead) considered by a computer program
（游戏规则用语）级数，步数，着数，招数。
[count noun]a half-move (i.e. one player's move) in computer chess
（电脑象棋中的）半步。
work with (a tool, especially one requiring steady, rhythmic movements)
（尤指持续有节奏地）使用，挥动
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a tailor delicately plying his needle .灵巧地使着针的裁缝。
work steadily at (one's business or trade); conduct
（辛勤地或不停地）从事，做。
[no obj., with adverbial of direction](of a vessel or vehicle)travel regularly over a route, typically for commercial purposes
（船或车辆尤指为商业目的而定期）航行于，往返于
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ferries ply across a strait to the island .渡船横穿海峡开往海岛。
[with obj.]travel over (a route) in this way
（定期）航行于，往返于
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the fleet has plied the Bristol Channel since Victorian times .从维多利亚时代开始，那船队就往返于布里斯托尔海峡之间。
(
不断提供，硬要给（食物，饮料）
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she plied me with tea and scones .她不断地给我斟茶夹饼。
direct (numerous questions) at someone
不断提问。
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ply for hire search for or be available for customers to hire 候客，等生意
"late Middle English （in the sense ‘fold’）： from French