因此，美国转变立场的可能性还是存在的。

It may be possible, then, to bring about a change in the US position.

同时很多改变投票的选民也清晰的说明了他们转变立场的原因。

And many voters who switched made it abundantly clear why they did so.

事实上，杜·波依斯经常在华盛顿和威廉·特罗特等对抗主义者之间转变立场。

In fact, however, Du Bois often shifted positions along the continuum between Washington and confrontationists such as William Trotter.