关于译林教材问2
译林7B中
A kangaroo cannot jump if its tail is off the ground. It needs its tail for pushing off.
是指它要靠尾巴反推而跳跃是吗.?如果是这样的话,前面一句是不是有问题呢?难道当它跳跃起来的时候尾巴也不会离开地面吗?
这句这样改一下是不是更合适呢?
A kangaroo cannot jump without its tail. It needs its tail for pushing off.