事实上，研究表明，大多数人更喜欢听到有声的笑而不是无声的笑。
In fact, research shows that most people prefer to listen to voiced laughter more than unvoiced.
我们可以从书中学到更多，但是我们会发现融入这种有声的世界，栩栩如生的画面不是更容易吗？
Some of us learn best from books, but many people find it easiest to engage with a combination of audio and visual material.
联合国开发计划署（UNDP）本周发布了其针对阿拉伯世界的现状的一系列掷地有声的报告的第五份。
The United Nations Development Programme (UNDP) this week published the fifth in a series of hard-hitting reports on the state of the Arab world.
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