用the hows and whys造句子，“the hows and whys”造句

She explained all the hows and whys of the issue.

the hows and whys; reasons; causes

Books and magazines are filled with the hows and whys, the rights and wrongs of buying and selling, of manufacturing and shipping, of finance and management.

ECONOMISTS turn over the hows and whys of the Depression in much the same way as statesmen once reflected on the decline of Rome or the eclipse of Athens by Sparta.