Lake Mead, penned to a height of 548 feet over its natural level and stretching almost as far as the horizon, seemed like an illusion, implausible and vaguely alarming.

• 米德湖被围起来之后，水面比自然高度高出167公尺，水平线直直延伸出去，看起来像是幻像、有点不真实，又令人有点担忧。