China's new deep-sea manned submersible (潜水) Fendouzhe set a(nation) diving record of 10,909 meters in the Mariana Trench. Only a few people (visit) the bottom of the Mariana Trench so far.
Four hours after the task started, a group photo of three Chinese divers was sent back, with each one (carry) a food plate in hand. They decided to work for six hours after they reached deepest spot. That spot is known as the Challenger Deep, with a(deep) of over 10,900 meters. The water pressure is 110 kPa, makes designing and operating submersibles difficult.
The cabin covering uses titanium (钛), a perfect material with high strength that allows the submersible (bear) water pressure at 10,000 meters under the sea. Powered by a battery, Fendouzhe can pick up samples (样本) from the surrounding environment its flexible robotic arms, which can work with the accuracy of one centimeter.
Sylvia Earle, former chief scientist of the US NOAA, said that the world is (current) in the greatest age of deep-sea research. China now is leading the world in many aspects of deep-sea (explore).
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