n.一层；一股；厚度；褶
v.定期往返；辛勤地做，不断做；不断供应；使胶合
We usually buy two-ply toilet paper. 我们通常买双层的厕纸。
It's used for single ply and much ply of big package yarn. 适合加工单股及多股纤维的大卷装纱筒;
用作动词 (v.)Buses ply between the two cities. 公车定期往返于那两个城市之间。
Ferryboats ply across the English Channel. 渡船定期往返于英吉利海峡。
This ship plies between London and Australia. 这艘船定期往返于伦敦和澳大利亚之间。
I plied him with questions about his novel. 我就他的小说向他提问。
The workers have no guarantee that they can continue to ply their skills. 工人们得不到可以一直在一个工种中不断锤炼技术的保证。
The muscles will ply the short wings with irresistible power. 这肌肉不断地给短翅膀提供非常坚强的力量。
And don't ply foreigners with lots and lots of disparate questions. 不要没完没了地向老外提出大量的互不相关的问题.
v.乘；繁殖；增加（multiplying的过去式）
