当点击播放按钮，角色将在按下上箭头键时开始走动，释放按键时，返回空闲姿势。

When you hit the Play button, the character will start walking in place when you hold the up arrow key and return to the idle pose when you release it.

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维持鼠标按键按下的状态下，用户可以操控箭头键将所选对象向上、下、左或右每次移动1个像素。

While holding down the mouse button, a user can manipulate the arrow keys to move the selection up, down, left, or right-one pixel at a time.

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维持鼠标按键按下的状态下，用户可以操控箭头键将所选对象向上、下、左或右每次移动1个像素。

While holding down the mouse button, a user can manipulate the arrow keys to move the selection up, down, left, or right-one pixel at a time.

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