1·When a lot of water comes, more than half of the city is underwater.
当大量的水涌入时，一半以上的城市都被淹没了。
2·Water enters a lake from inflowing rivers, from underwater seeps and springs, from overland flow off the surrounding land, and from rain falling directly on the lake surface.
湖中的水来自于河流的水、地下渗入的水和泉水、从四周地面流进来的水，还有直接降到湖面的雨水。
3·Possibly including a "water planet," with an underwater city, and a "city planet," with the whole planet built over.
可能包括一个“水的星球”，以及一座水下城市，和一个“城市星球”，整个星球都是城市。
4·The engineering principle is no different — the steady currents found in coastal of water like Canada's Bay of Fundy turn the rotors of an underwater turbine.
工程原理没什么不一样-在加拿大芬迪湾这样的沿海水域找到的稳定洋流使一台水下涡轮机的转子转动。
5·When underwater, the animals pushed water past their gills while simultaneously pushing the glottis down.
当处于水下时，动物会把水推入到腮里，同时也把声门关闭了。
6·Katija and the biologists she works with record and measure the flow of water around animals using fluorescent dyes and a sophisticated underwater laser-video camera system the team developed.
卡迪加与和她一起工作的生物学家一道，用荧光染料和他们自己团队研发的一个复杂的水下激光摄像系统记录和测量动物周围的水流。
7·If the quake occurs underwater, as the one in Japan did, the up-and-down movement displaces an enormous amount of water, setting off the tsunami.
在海底地震中，如本次日本海沟地震，板块的上下错动会掀开大量海水，因而激发了海啸。
8·"And that makes sense when you think of all the water that's there and you've got ports, Bridges, pipelines and other critical infrastructure underwater," she said.
“想想与水有关的港口、桥梁、管道还有其他一些重要的水下基础设施，都需要水下机器人”，她说。
9·There is an underwater obstacle section. Participants have to hold their breath and make their way through the muddy, freezing water.
这里进行的是水下障碍物项目，挑战者必须屏住呼吸穿越冰冷的泥潭。
10·Photo Tip: Consider over/under photos as alternatives to underwater shots. The key is to have strong subject matter in the water.
照片提示：考虑把水面/水中拍摄来替代水下拍摄，关键在于水中要有强大的目标物体。