n. 拼图; 拼板玩具; 神秘莫测的事物(或状况); 谜团; 线锯; 镂花锯; 钢丝锯 jigsaw的复数
柯林斯词典
拼图;拼图玩具 A jigsaw or jigsaw puzzle is a picture on cardboard or wood that has been cut up into odd shapes. You have to make the picture again by putting the pieces together correctly.
N-COUNT 错综复杂的情况;谜团 You can describe a complicated situation as a jigsaw .