rotateword css动画在IE 9中不起作用

Question

我使用过CSS3技巧，但似乎它在IE 9或更低版本中不起作用。

    -webkit-animation: rotateWord 18s linear infinite 0s;
-moz-animation: rotateWord 18s linear infinite 0s;
-o-animation: rotateWord 18s linear infinite 0s;
-ms-animation: rotateWord 18s linear infinite 0s;
animation: rotateWord 18s linear infinite 0s;

你有什么建议吗？