The wrist bones of Acanthostega weren't arranged in a formation that would've made walking a very easy motion.

Acanthostega 并没有排列成使行走变得非常容易形状。

Also, the carpals in their wrists were elongate and made a greater contribution to the length of the wing.

此外，它们手处伸长，对翅膀长度贡献更。

Those pterosaurs typically had shorter tails, longer wrist bones, big crests, and either simple teeth or no teeth at all.

这些翼龙通常有较短尾巴、较长、较嵴以及简单牙齿或根本没有牙齿。

The fossils are the oldest-known evidence of the false thumb, which is really an enlarged wrist bone called the radial sesamoid.

这些化石是目前已知关于伪拇指最古老证据，伪拇指实际上是一块叫做桡侧籽增。

All these motions use gliding, or plane joints, like the one between the distal ends of your radius and ulna, and the carpal bones of your wrist.

所有这些运动都使用滑动或平面关节，比如桡远端和尺之间关节，还有手。

It's important to have your proportions in balance, he says and advocates making sure your sleeves are the right length – roughly halfway between your wrist bone and the bone at the bottom of your hand.

他说，让你比例保持平衡很重要，并提倡确保你袖子长度合适——约在你和手底头之间一半。