大学英语六级常用短语 undermine a wall
释义：
undermine a wall 挖墙脚
例句：
At worst, it was a covert attempt on behalf of the government to draw out Anonymous members and undermine the validity of the Occupy Wall Street movement.
大学英语六级常用短语 undermine a wall
释义：
undermine a wall 挖墙脚
例句：
At worst, it was a covert attempt on behalf of the government to draw out Anonymous members and undermine the validity of the Occupy Wall Street movement.