1.sit on 坐在；坐着

例句：Negotiate about Afghanistan, but don't sit on your hands while you bargain.
谈判阿富汗问题吧，但当你谈判时不要坐守不前、不采取行动。

2.childhood童年；童年时光

例句：Adolescence is the period of progression from childhood to adulthood.
青春期是由童年到成年的过渡期.
3.curb 路边；路旁

例句：Elaborate funeral cars stood along the curb.
精心装饰的出殡汽车沿街排列着。

4.start 开始；着手；出发
例句：When you start developing your narrative, choose photographs of your personas.
当你开始展开叙述时，选择你人物角色的照片。