The chest had a large heavy lid with a large sharp ironlock.
这个箱子的盖子非常沉重，上面有一把锋利的大铁卡子。
2
An ironlock mechanism is arranged outside so as to be easily replaced.
铁锁机构是外置的，很容易更换。
3
On examining it he found that the door was not a door; it had neither hinges, cross-bars, lock, nor fissure in the middle; the iron bands traversed it from side to side without any break.