A safety bicycle is a type of bicycle that was developed in the late 19th century, designed to be more stable and easier to ride than earlier models. It features two equal-sized wheels, unlike older bicycles with a large front wheel and a small rear wheel. The design includes a chain-driven mechanism, which allows the rider to pedal directly to propel the bike forward, providing a smoother and safer ride. The safety bicycle is considered the predecessor to the modern bicycle and made cycling more accessible to the general public by offering better balance and control.

英語での「safety bicycle」の定義と意味

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