key·card 
(kēkärd′)
(kēkärd′)n.
A usually plastic card that operates an electronic lock or gate, as by transmitting a digital passcode to a sensor.
| 单词 | keycard |
| 释义 | key·card (kēkärd′)n. A usually plastic card that operates an electronic lock or gate, as by transmitting a digital passcode to a sensor. |
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