音乐淡出一会儿，程序告诉你慢走90秒钟左右。
It fades the music down for a moment and tells you to stroll around for about 90 seconds.
一位驻L'Aquila的BBC记者称格林尼治时间2200左右发生一起强烈余震，持续时间大约2秒钟，大地像果冻一样摇晃。
A BBC correspondent in L'Aquila said there was a strong after-shock around 2200GMT, which lasted for around two seconds and made the ground feel like jelly.
我们在北美所做的研究中，使用Google . cn搜索的时长大约在8到10秒钟左右。
In our North American studies, we saw an average interaction with Google lasted about 8 to 10 seconds.
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