| 牢 | cattle pen | 
| prison | |
| 牢固 | firm;secure | 
| 牢记 | remember well | 
| 牢牢 | firmly;safely | 
| 牢骚 | grumbling | 
| 牢狱 | prison;jail | 
| 坐牢 | be in prison | 
| 牢 | cattle pen | 
| prison | |
| 牢固 | firm;secure | 
| 牢记 | remember well | 
| 牢牢 | firmly;safely | 
| 牢骚 | grumbling | 
| 牢狱 | prison;jail | 
| 坐牢 | be in prison | 
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