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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。