After about five years of climbing, I found myself in Yosemite Valley on a big wall.

经过大约五年的攀登训练，我发现自己能爬到约塞米蒂山谷的一堵高墙上。

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A big wall shut out the light.

一堵高墙把光线挡住了。

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The palace had a big wall.

这座宫殿的围墙很高大。

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The first step in the process is when I was Deputy WHCF, that I put on the wall a big white board calendar.

程序的第一步是,当我还是办公室副主任，我在墙上安了个,白色的日历板。

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