1. One way to tell is by measuring the bones of their forelimbs. 一种判断的方法是测量它们前肢的骨头。
2. He grapples with the manticore, keeping its mantis forelimbs from locking onto him. 他与这个蝎尾怪兽扭打着，不让它螳螂般的前肢夹住他。
3. Even rudimentary feathers on forelimbs could have expanded the arm's surface area to enhance lift slightly. 即使是前肢发育不全的羽毛也能扩大手臂的表面积，以略微提高升力。
4. Archaeopteryx shows no obvious features of gliders, such as a broad membrane connecting forelimbs and hind limbs. 始祖鸟并没有表现出明显的滑翔机的特征，比如有一层连接前肢和后肢的宽膜。
5. Perhaps some of them could climb trees, but no convincing analysis has demonstrated how Archaeopteryx would have both climbed and flown with its forelimbs. 也许其中一些祖鸟会爬树，但是没有令人信服的分析证明始祖鸟是如何用它的前肢既爬又飞的。
