v hit a foul ball
v make impure
v become or cause to become obstructed
v commit a foul; break the rules
v spot, stain, or pollute
v make unclean
v become soiled and dirty
s made dirty or foul
s especially of a ship's lines etc
v. 使污秽( foul的过去式和过去分词 ); 弄脏; 击球出界; （通常用废物）弄脏