principal adj. most important; main 最重要的；主要的
n 校长
principle 原则 违背我的原则 against my principles
恪守自己的原则 Stick to your principles
原则问题 a matter of principle
Convince sb. of sth 使确信
Convince sb to do 说服，劝说（某人做某事）

Convincing有说服力的
a convincing argument/explanation/case 有说服力的论点╱解释╱事例
convinced : completely sure about sth 坚信；深信；确信
I am convinced that she is innocent.我坚信她是清白无辜的。
I am convinced of her innocence.我坚信她是清白无辜的。
be convinced of sth/that..

initiate no illegal activity 不发起非法活动
Initiative n.
[ U] the ability to decide and act on your own without waiting for sb to tell you what to do 主动性；积极性；自发性
•She did it on her own initiative . 她是主动这么做的。
the initiative [ sing.] the power or opportunity to act and gain an advantage before other people do 掌握有利条件的能力（或机会）；主动权
•to seize/lose the initiative 掌握╱丧失先机
take the initiative 采取主动。
initial adj.
happening at the beginning; first 最初的；开始的；第一的
•in the initial stages (= at the beginning) of the campaign 运动的最初阶段
•My initial reaction was to decline the offer. 我最初的反应是要婉言谢绝这个提议
shield students from publicity 保护学生不受公众关注
publicity
the attention that is given to sb/sth by newspapers, television, etc. （媒体的）关注，宣传，报道
You can't shield her from the truth forever 你不可能永远瞒着她，不让她知道事实
keep from 阻止
Shelter sb/sth (from sb/sth)保护
Alter transform convert change 改变
disguise 掩盖，隐藏 2. 假扮；装扮； 伪装~ sb (as sb/sth)