名詞 bike:

1. a motor vehicle with two wheels and a strong frame
   同義詞：motorcycle
2. a wheeled vehicle that has two wheels and is moved by foot pedals
   同義詞：bicycle, wheel, cycle

動詞 bike:

1. ride a bicycle
   同義詞：bicycle, cycle, pedal, wheel

1. I've decided to buy that bike.
   我已決定購買那輛自行車。
2. I want to have a ride of that bike.
   我想騎一騎那輛自行車。
3. Have you got any proof that you own this bike?
   你有什么證據證明這輛自行車是你的？
4. You ought to scrap the old bike and buy a new one.
   你應該扔掉這輛舊自行車，買一輛新的。
5. Mary scrape her knee when she fall off her bike.
   瑪麗從腳踏車上摔下來擦傷了膝蓋。
6. To my disappointment, my father doesn't agree to buy me a new bike.
   我父親不同意給我買新腳踏車，我很失望。
7. I have a red bike.
   我有一輛紅色的自行車。

bike

n.（名詞）
A bicycle.
自行車
A motorcycle.
摩托車
A motorbike.
機動腳踏兩用車
v.intr.（不及物動詞）
biked,bik.ing,bikes
To ride a bike.
騎自行車

來源：
Shortening and alteration of bicycle
bicycle的簡寫和變化