Digging deep into Earth
本文作者： TEENS
地下一万米 Chinese engineers have dug (挖) a “super” hole in a desert in Xinjiang. It’s over 10,000 meters underground. That’s deeper than the height (高度) of over 30 Eiffel towers! It’s the deepest borehole (地上凿洞) in China. |  |
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