If you add just one or two pieces of equipment: a dumbbell, a kettlebell, a jump rope, a medicine ball, or a chinup bar, for example, you can increase the challenge even more.
如果你只用一两个器械的话:一个哑铃,一个壶铃,一条跳绳,一个健身实心球,或者一条杆(用作引体向上)等,都可以作为选择。你还可以对自己加大挑战。
If you want an even bigger preview, press the space bar to pop the (still playing) preview into its own Quick Look panel.
如果你想要一个更大的预览,按空格键弹出(依然播放)到自己的Quick Look面板。
Here's a quick hint to help you get around on such a tiny device: holding down Alt + left mouse button will allow you to drag screens around on your desktop, even if you can't see the title bar.
下面是可以帮助您在这样小的设备上进行操作的一个快速提示:即使看不到标题条,按下alt +鼠标左键也可以让您在桌面上拖动屏幕。
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