铁门的英文：
iron gate

参考例句：

The iron gate was closed fast and four policemen stood on guard.
铁门是关得紧紧的了，两对警察是门岗。

They installed an iron gate guaranteed against robbery.
他们安装了一扇防盗铁门。

Behind wrought iron gates, a small, cobbles-stoned courtyard, polished with age…
在大铁门后面，一座卵石铺砌的小庭院，日久天长磨得发亮…

iron是什么意思：
n. 铁；铁质；熨斗；刚强；毅力；铁头球杆
v. 烫平，熨
adj. 铁的，刚强的

The hot iron seared the trousers.
热熨斗烫焦了长裤。

Iron oxide red pigments
GB/T1863-1989氧化铁红颜料

Strike while the iron is hot.
打铁趁热。

Iron corrode easily.
铁易受腐蚀。

The party has iron discipline!
党有铁的纪律！

gate是什么意思：
n. 大门；出入口；闸门；登机门

Close the lock gate please.
请关上闸门。

Please keep clear of the gates.
请勿靠近门。

main gate lodge
大闸区；大闸门房；大闸传达室

He is a gate-crasher.
他是个不速之客

josephson junction logic gate
约瑟夫逊结逻辑门电路