n one of the strands twisted together to make yarn or rope or thread; often used in combination
n (usually in combinations) one of several layers of cloth or paper or wood as in plywood
v give what is desired or needed, especially support, food or sustenance
v apply oneself diligently
v travel a route regularly
v join together as by twisting, weaving, or molding
v wield vigorously
v use diligently
v. 使用（工具）( ply的第三人称单数 ); 经常供应（食物、饮料）; 固定往来; 经营生意