nilrepresentation of a Lie algebra

例句：

1. 1. The team lacks astrong leader who can effectively represent the group's interests.
   该团队缺乏一个能有效地代表团体利益的强有力领导者。
2. 2. Theresearch paper presented at the conference did notrepresent the findings of the study.
   在会议上提交的研究论文并没有反映研究的发现。
3. 3. Thecompany's decision to cut back onspending was seen as a non-representative move by some analysts.
   一些分析师认为，公司削减开支的决定并不具有代表性。