控件在外观和行为上与下压按钮一样。
Button control in Visual Basic looks and behaves like a push button.
下压按钮跳过这个动画，并提出立即的时间。
Pressing the lower button skips this animation and presents the time immediately.
但是下压按钮的整个目标是在它被激活时触发一个动作。
But the whole point of a push-button is to trigger an action when it is activated.
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