单语范例（未经PONS编辑处理）
The males fight back even harder and use their forelegs to tightly grasp the females thorax and keep them from escaping.
en.wikipedia.org Other genetic problems include shortened tendons of the forelegs, club foot, kidney problems, arched or crooked backbone and twisted neck.
en.wikipedia.org Their forelegs were shortened but their hind legs elongated.
en.wikipedia.org Two dark rings are on the forelegs, and hind legs are striped.
en.wikipedia.org Females also fight on their hind legs and use their forelegs to hit each other in the head.
en.wikipedia.org