11.If they hit any unseen obstacle they would be pitched headlong into the snow.
如果撞上任何没看见的障碍,他们就会被一头拋进雪。
12.The river takes a headlong plunge into a maelstrom of rocks and boulders.
河急流而下, 入一个漂砾的漩涡中。
13.When they came to the fork of the road, his horse turned left into a bypath as if it were possessed with a demon and began to run headlong down the hill.