门禁的英文：
1.a entrance guard

entrance是什么意思：
n. 入口，门口；进入，登场，入学
v. 使狂喜，使着迷

She was entranced with the music.
这音乐使她听得出了神。

No entrance without a permit.
没有许可证不准入内。

To gain entrance gradually or surreptitiously.
渗透逐渐地或秘密地获得进入权

There is a front and a back entrance to the house.
这所房子有一个前门和一个后门。

The audience oozed toward the entrance.
观众慢慢朝进口处走去。

guard是什么意思：
n. 卫兵；护卫队；守卫；警戒；防护装置；列车长
v. 看守；监视；控制；防范

guarding position
防守位置

a guarded answer
谨慎的回答

...the Irish Guards
...爱尔兰近卫团

a security guard
安全警卫

The sentry is on guard.
那哨兵在站岗。