talk down
1．make silent by talking louder or longer高声压过（别人的话）；使哑口无言
He tried to argue back but his opponent talked him down．他想反驳，但他的对手高声压倒了他的话。
Such an eloquent man will easily talk us down．这样一个有口才的人，很容易把我们驳得哑口无言。
2．speak disparagingly of; belittle 说…坏话；贬低
The hostile newspapers talked down the importance of the Minister's arrival here．持敌对态度的报纸对部长来此访问的重要性加以贬低。
3．give radio instructions for landing an airplane because of instrument failure or poor visibility（因仪器故障或能见度低）用无线电通讯引导飞机降落
His flying instruments have all been destroyed by enemy gunfire，so the air traffic controllers will have to talk him．他的飞行器械都给敌人的炮火击毁了，所以机场导航员只能通过无线电讲话引导他降落。
4．use words or ideas that are too easy用太简单的字或观念
The speaker talked down to the students， and they were bored．演讲者讲的内容太简单，学生们都听得不耐烦了。
5．speak in a condescending or superior manner以高人一等的口吻说话
She talks down to everyone，particularly young people．她对谁讲话都摆出高人一等的样子，特别是对青年人。
The audience do not like being talked down to．听众不喜欢听人用高人一等的口吻同他们讲话。