where onc the union had acquiesced to the prejudices of its english-speaking member by supporting the imposition of an alien tax on immigrant workers, after 1897 te United Mine workers made a determined effort to enlist Italians and Slavs in its ranks.
答案就是原句正确,但是解释里说where是引导(尽管)从句,表示尽管的不应该是while 吗???
求解答!