Shift+click will select individual frames and Control+click (Windows) or Command+click (Macintosh) will select discontiguous multiple frames.

• “shift+鼠标单击”用于选择单个帧，“Ctrl+鼠标单击（Windows系统）”或“Command+鼠标单击（苹果系统）”将会选择不连续的多个帧。