但当我到达那里的时候，我的心便一沉：环道挤满了参加赛跑的人，而自行车手们却被转移到一条单车道上。
But when I arrived, my mood plummeted. The road was filled with runners in a race while the cyclists were relegated to a single lane.
不管你是要扣紧刹车、要蹬踩踏板或者两者同时，变速轮之间都可以轻松变换以顺利实现提速或减速，而自行车的电池耗电会比较少。
Whether you’re cranking the throttle, hitting the pedals or both, a shift of gears provides easier climbs or declines in grade, with less of a toll on the bike’s battery.
她把脚从自行车的踏板上松开，沿山坡滑行而下。
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