如果您是明智的话，Matson对自己严厉地说，您永远不会进行单程旅行。任何地方。甚至是博伊西，爱达荷州...甚至在街对面。确定，当您开始时，您可以爬回去。
(If you are wise, Matson said to himself grimly, you never take one-way trips. Anywhere. Even to Boise, Idaho...even across the street. Be certain, when you start, that you can scramble back.)