“阻碍的”用英语怎么说

雷契先生在头顶上大叫,说他已经看到前面一无阻碍的水面了.Mr. Riach announced from the top that he saw clear water ahead.这将使黑人有机会在不受种族主义阻碍的条件下生活.This would give black people the opportunity to live unhampered by racism.实际上,我们必须让这些市场在不受这些阻碍的情形下自由运作.Th...