His doting parents bought him his first racing bike at 13.

溺爱他的父母在他13岁时给他买了第一辆自行车跑车。

《柯林斯英汉双解大词典》

First, when you get your bike, whether it's new or second-hand, bring it as soon as possible to us.

首先，当你得到你的自行车，无论是新的还是二手的，尽快把它带给我们。

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In 1981 it launched the first mass-produced mountain bike.

在1981年，首款大批量生产的山地车投放市场。

《柯林斯英汉双解大词典》

but I do bike in the bike lanes on First Avenue.

不过我会在第一大街的自行车道上骑车。

喜欢自行车 - SpeakingMax英语口语达人

It's a far cry from those first bike trips, where they didn't even have a support vehicle to haul gear.

NPR: Hugging Highway 1: Blind Pilot's Bicycle Tours

Mr. Smit's first bike, the Vanmoof prototype, was created in 2008 as an aluminum riff on a men's city bike.

WSJ: Sjoerd Smit of Vanmoof: A Designer Spin on the Grandma Bike

At first, our tours looked a lot like that first bike ride, with foreigners coming in to "serve" people in places they knew very little about.

BBC: Viewpoint: Is gap year volunteering a bad thing?