1·Now he believed that where there was a key, there must also be a lock, so he dug in the ground and found a little iron chest.
他相信这儿既然有一把钥匙，肯定也有一把锁，他在地面深处找到了一个小铁箱。
2·Iron dug from the ground, copper melting from the stone.
铁从地里挖出，铜从石中溶化。
3·Now he believed that where there was a key, there must also be a lock, so he dug in the ground and found a little iron chest.
他想，既然钥匙在，锁也一定就在附近，便往地里挖，挖出了个铁盒子。
4·The people dug and dug all around, then they found a few pieces of rusty iron.
人们继续在周围挖，他们找到了几片锈铁。