双向箭头
双向箭头-
两端都带有一个45度箭头的双向箭头形状。
Double arrow with a 45-degree arrowhead at each end .
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左右双向箭头。翻转或旋转箭头可更改其方向。它是向上、向下，还是向左向右？
Arrow pointing left and right . Flip or rotate the arrow to change its direction .
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例如，将鼠标指针移到任务名称的第一个字母时，鼠标指针将变成双向箭头。
For example , when you move the pointer over the first letter in a task name , it changes to a two-way arrow .