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... than riding a boat!"
"The four-wheeled carriage is inherently more stable than the two-wheeled carriage, because the device is different. Not only is the turning device added, but more importantly, the shock absorption is also much stronger. And it is more stable on the track."
The rail carriage is also a rail carriage, which is also an invention of Qin Lang. It was first used in mines and docks. It is bigger and stronger than ordinary carriages, and can carry more things. Rail ...
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