您要查找的是不是：
- His speech failed in proof. 他的演讲缺乏证据。
- His speech failed in persuasiveness and proof. 他的讲演缺乏说服力和论据。
- His speech failed in persuasiveness. 他的演讲缺乏说服力。
- His speech was fluent, but failed in impressiveness. 他说话流利，但给人印象不深。
- His speech failed to sway his colleagues into supporting the plan. 他的一番话没能使他的同事支持这项计划。
- He made many ludicrous mistakes in his speech. 他的演讲中有许多可笑的错误。
- The headmaster failed to strike the right note in his speech on diligence and the lazy pupils continued to idle away their time. 小学校长关于勤奋的讲话没有取得所需要的效果，那些懒惰的学生照样把他们的时间浪费掉。
- He failed in everything he tried. 他想来的一切办法都没成功。
- There was no real meat in his speech. 他的讲话没有什么实际内容。
- In his speech he kept pounding away at his opponent's inefficiency. 他在演说中不断攻击他的对手不称职。
- He slipped up in his calculation and failed in the examination. 他计算出了错，这次考试未能及格。
- Is essential in proof of his innocence. 对证明他的清白非常必要。
- Jim failed in the exam, but he charged it to his poor health. 吉姆没通过这次考试，但他归咎于身体不好。
- His speech disrupted the meeting. 他的讲演使会场陷入混乱。
- The style of his speech was in complete antithesis to mine. 他和我的讲话方式完全相反。
- He studied hard only to fail in the exam. 他这么用功，结果竟然考场失利。
- He ended his speech with a merry quip. 他以十分风趣的话结束了演讲。
- In proof of this theory, I shall make certain studies. 为了证明这一理论,我将进行某些研究。
- The speaker will soon wind up his speech. 演说者就要结束他的讲话了。
- He failed in doing business and went under. 他做生意失败而告破产。
