It describes skyscrapers that are much taller than today's buildings, underwater "bubble" cities and holidays in space.

它描述的是比现在高得多的摩天大楼、水下“泡沫”城市和太空度假。

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Radioactive steam will still bubble up to the top of the water in the containment vessel, but will be harder to vent as the systems for doing so in an orderly manner are now underwater.

在安全壳内，放射性蒸汽将会持续形成气泡并上升到水面顶部，但是放压工作却更困难了，因为系统在正常方式下的放压操作现在却要在水下进行。

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An air bubble ascending from the ocean floor contorts and twists into a semicircle as a wave breaks in the background. Captured as part of the Underwater Project.

一个气泡从大洋下曲折上升，在背景中形成一个半圆。该图作为水下项目的一部分而拍摄。

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This suggests that while negative equity and delinquency are most common among peak-bubble purchasers, these borrowers are not significantly more underwater than purchasers in earlier years.

FORBES: Getting to Know Underwater Homeowners

The housing bubble burst and caused a situation where a vast number of American homeowners saw their mortgages go underwater, the values of their home go lower than the cost of their mortgage.

WHITEHOUSE: Press Briefing