学习资料

[意       思]vt. 在……挖下水道
[例]  The convicts undermined the prison wall and escaped. 囚犯们在监狱墙下挖地道逃跑了。
vt. (海,风等)侵蚀...的基础
[例]  The waves had undermined the cliff. 波浪冲刷侵蚀悬崖的底部。
vt. 暗中破坏，逐渐损害
[例]  The bad cold had undermined her health. 重感冒损伤了她的健康。

更多意思

vt.1.  逐渐削弱（信心、权威等），使逐步减少效力
2.  从根基处破坏，挖……的墙脚

参考例句

1.	They spared no efforts to undermine the democratic life inside the Party.
	他们不遗余力地破坏党内的民主生活。
2.	That may undermine a strong constitution.
	那会损害强健的体魄。
3.	weaken [ undermine ] the king's authority
	削弱[逐渐损毁]国王的权力
4.	destroy [ undermine ] morale
	破坏士气
5.	undermine his influence at court
	破坏他在朝廷中的势力