- 留级
- stay in the same grade
- 留级
- repeat courses
- 留级
- fail to go up to the next grade
- 留级
- stay down
- 留级生
- repeater
- 镏金
- gold-plating
- 镏金
- gild
- 镏金宫灯
- gilded palace lantern
- 流利
- smooth
- 流利
- fluent
- 流利
- flowing
- 笔头流利
- write in a smooth style [or in an easy and fluent style]
- 琉璃
- coloured glaze
- 琉璃瓦
- glazed tile
- 流弊
- malpractice
- 流弊
- abuse
- 流弊
- drawback