自行车钥匙用英语怎么说呢

"Bicycle key" is the English term for "自行车钥匙".

The term "bicycle key" comes from the use of the key to lock and unlock a bicycle, usually to secure the bike or prevent theft.

Example sentence in English: "I always carry my bicycle key with me so I can lock up my bike when I stop."

Example sentence in Chinese: "我总是随身携带我的自行车钥匙，这样当我停下来时，就可以把自行车锁起来。"