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🎧 Listening Transcript

Today we're going to discuss the history of the bicycle. Now, you might think that the bicycle was invented in the 19th century, and in fact, the first two-wheeled vehicle, called a 'draisine', appeared in 1817. However, it had no pedals. The pedals were added in the 1860s, and later, in 1885, the 'safety bicycle' with a chain drive was introduced. Interestingly, the pneumatic tire, which we all rely on for comfort, was not invented until 1888 by a Scottish veterinarian named John Boyd Dunlop. He originally designed it for his son's tricycle to make the ride smoother.
❓ ジョン・ボイド・ダンロップが空気入りタイヤを発明した主な目的は何でしたか?

✅ 正确答案

To make riding more comfortable for his son

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