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The old barges, once used to transport building materials, coal and food from the Port of London, have spent more than 30 years moored in Essex.
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The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far. The sciences, each straining in its own direction, have hitherto harmed us little; but some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the deadly light into the peace and safety of a new dark age.
2.9 SiLU（Swish）
Simple actuators without this capability are a bit like manual transmission cars that need to be shifted into reverse.