At first they were unable to move their hind legs at all, but by the end of the study they could support their weight and walk almost perfectly.
起初，它们根本无法移动后腿，但在研究结束时，这些老鼠可以承担全身的重量，而且可以近乎完美地步行。
Then he realized that it was a Wolf - a Wolf standing on its hind legs, with its front PAWS against the tree-trunk, snapping and snarling. All the hair on its back stood up on end.
后来他才想到这是一匹狼——一匹狼后腿站着，前爪扑在树干上又咬又吼，背上的毛根根竖起。
Right now, Oscar has round pegs at the end of his hind legs.
现在，在奥斯卡的后腿的端部已经有了圆钉。
Right now, Oscar has round pegs at the end of his hind legs.
现在，在奥斯卡的后腿的端部已经有了圆钉。
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