铁门是关得紧紧的了，两对警察是门岗。
The iron gate was closed fast and four policemen stood on guard .
公园的铁门当啷一声关上，耳边可以听到脚步声和响亮的说话声；
The iron gates of the park shut with a jangling clang . There are footsteps and loud voices ;
铁门关