eye coal

例句：

1. 1. The old man's eyes were filled with tears as he gazed at the distant mountains.
   老人的眼睛充满了泪水，凝视着远处的山峦。
2. 2.The miners used to collect coal from the mines for their homes.
   矿工们过去会从矿井里收集煤炭来为他们的家供暖。
3. 3. The coal mine was a dangerous place where workers often had to work in extreme conditions.
   煤矿是一个危险的地方，工人们经常需要在极端条件下工作。