New words：

persuasive [pərˈsweɪsɪv] adj.有说服力的；令人信服的

词根关联：“persuad (e)” + 形容词后缀 “-ive”，描述 “具有劝说能力的” 属性。

The evidence was not really persuasive enough.

dissuade [dɪˈsweɪd] v.劝阻；劝（某人）勿做（某事）

词根关联：否定前缀 “dis-”（表 “不、反向”） + 词根 “suad-”（劝说）→ “反向劝说” 即 “劝阻”。

固定结构：dissuade sb (from sth/from doing sth)

= to persuade sb not to do sth

I tried to dissuade him from giving up his job.

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