And now they have climbed Half Dome, up a route so dangerous because of its crumbly granite that fewer than 30 people have climbed it.

• 现在他们又征服了Half Dome 这座峭壁，而且是沿着一条危险的松软的花岗岩表面攀上去的，那里只有不到30个人曾经攀上去过。