1·He waited, expecting it to slacken pace, or to swerve from him into a different course.
他等待着，希望它放慢脚步，或者绕过他改变方向到另一条路上去。
2·In the first months of my appointment, difficulties and challenges cropped up in large number, but I wouldn't slacken my pace.
在我上任的最初，我面临过许多的困难和挑战，但我不能懈怠，我必须不断前进来克服它们。