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
錯綜復(fù)雜的情況；謎團
You can describe a complicated situation as a jigsaw .
例句
...the jigsaw of high-level diplomacy.高層外交的錯綜復(fù)雜