超负荷的系统加载和各种其他因素会影响Firefox接收鼠标移动和键盘事件。
Heavy system load and a variety of other factors can affect when Firefox receives the mouse move and keyboard events.
提供有关键盘事件类型的信息，还提供键盘事件处理程序所接收的信息。
Provides information on the types of keyboard events and the information that is received by the keyboard event handlers.
提供有关键盘事件类型的信息，还提供键盘事件处理程序所接收的信息。
Provides information on the types of keyboard events and the information that is received by the keyboard event handlers.
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