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形容词无键的，转柄上发条的
1. 无键的：keying sequence 密码序列 | keyless 无键的 | keyman 关键人物
2. 无键：普通键槽keyed | 无键keyless | 尾轴管Stern tube:
adj
1. lacking or not requiring a key
e.g. a keyless lock operated by a series of pushbuttons