1·It clearly had four limbs that could have been used for walking.
它显然有四肢，可以用于行走。
2·Instead, he says that pterosaurs needed all four limbs for liftoff.
他说翼龙需要使用它们所有的四肢来起飞。
3·Thousand. 2005 one day of night, detected suddenly oneself four limbs are incapable.
2005年的一天夜里，突然发觉自己四肢无力。
4·Mobility system: no deformation of four limbs, no red swelling of joint. Free movement.
运动系统；四肢正畸形，关节无红肿，活动自如。
5·After standing in the chilly wind for too much time, the captain felt stiff in four limbs.
船长站在寒风里太长时间，以至于感到四肢僵硬。
6·The main symptoms of most neurinomas were neck pain, numbness and weakness of four limbs;
大多肿瘤的主要症状是颈部疼痛、四肢麻木、无力。
7·The question, then: Why stand and walk on two legs when our ape Cousins get by on four limbs?
问题就随之而来了：为什么在我们的类人猿亲戚们还在用四肢行走的时候，我们就已经直立并用两足行走呢？
8·Helicopters are notoriously hard to fly because a control exists for each of the pilot's four limbs.
众所周知直升飞机很难飞起来，是因为飞机员的四肢都有操纵装置。
9·Swimminging in a summer pond, we notice how natural it is to use all four limbs to travel along.
夏日在池塘里游泳，四肢击水前进，感觉非常自然。
10·Objective Studies on the efficient measurements of movement range of the joints of the four limbs.
目的研究有效的四肢关节活动度的测量方法。