He would become the first nonwhite president of the world bank if he is approved , as expected , by the bank 's board next month .
如果下个月他的提名如预期那样获世界银行执董会通过，他将成为世界银行历史上首位非白人行长。
That seemed clear enough but things got tricky when the nonwhite ancestor was a grandparent or a great-grandparent and the minority blood became increasingly diluted .
