玩溜溜球的奇怪技巧就在这个免费溜溜球视频里。
Strange tricks to play with your yo-yo are in this free yo-yo video.
探险摄影有其独具有的一系列的挑战。在这个画集里，你会学到一些捕捉最佳动作的镜头技巧。
Adventure photography has its own set of special challenges. In this gallery, get tips for capturing the best action shots.
自那以后，我对它作了大量修改。所以在这篇文章里，我会详细介绍这个学习技巧圣典中关键部分的全新改良版本。
A lot has changed since then, so in this post I describe a new and improved version of this key piece of the Study Hacks Canon.
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