通行证的英文：
pass
passport
Protection

参考例句：

Gate pass
通行证

Safe conduct
(战时)通行证

The guard won't let anyone through the gate without a pass.
哨兵不让没有通行证的人通过大门。

He flashed his pass at the security offcier.
他向保安员亮了一下通行证。

The guard stopped Lenin so as to check his pass.
卫兵拦住列宁，要检查他的通行证。

This pass enables me to travel half-price on trains.
我用这张通行证坐火车半价。

You can get in with this provisional pass
你可以用这张临时通行证进入。

It is ludicrous that we have to show our pass each time.
我们每次都得出示通行证，这太可笑了。

Thus reliableness becomes a passport to the general esteem and confidence of mankind.
因此诚信是人类获取尊重和信任的通行证。

The gate is guarded by soldiers; you can't go without a pass.
大门有兵守卫，你没有通行证过不去。

pass是什么意思：
v. 通过；传递；及格；经过
n. 穿过，经过；通行证，护照，入场证

This coin will not pass.
这钱币不通用。

pass a messenger
传递引绳

The evening passed as evenings mostly pass at Italian theatres
那一声过得很平淡，象意大利戏院里的大多数夜晚一样

passport是什么意思：
n. 护照；途径，手段

You have to apply for a passport in advance.
你必须提前申请护照。

My passport is out of date.
我的护照已经过期了。

Validate a contract,marriage,passport
使合同生效、使婚姻具有合法性、签准护照.

protection是什么意思：
n. 保护；防护；保护者；防护物；保护贸易制度

A protective overlay, as for a mattress or furniture.
护套保护性的饰布，如坐垫或家具。

a protective case for a knife or sword.
刀或剑上的保护性外壳。

invoke the protection of...
祈求…的庇护