留 | liú | to leave (a message etc); to retain; to stay; to remain; to keep; to preserve |
liú | old variant of 留[liu2] | |
liú | old variant of 留[liu2] | |
痕 | hén | scar; traces |
教程 | jiào chéng | lecture course; teaching module at university; tutorial; textbook; course of study |