keyless
adj. 无键的;(钟表等)以转柄上发条的
例句
Does your car have remote keyless entry?
你的车能远程无钥匙进入吗?
The pulse wheels are keyless and very easy to align.
脉冲车轮钥匙,很容易相互协调。
If you are considering a keyless electronic lock, look no further.
如果你正考虑一项电子锁键,再看看。