New words：
recipe [ˈresəpi] n.食谱；（实现某事的）方法、秘诀；处方；配方
“recipe” 本身由拉丁语 “recipere”（re-回 +capere拿）演变而来，最初指 “拿回来的方法”，后来特指烹饪的 “配方” 或医学的 “处方”。
Sample Sentences：
What's her recipe for success?
She has a special recipe for egg tart.
You can use milk in place of cream in this recipe.
She found a simple recipe for chocolate cake online.
egg tart 蛋挞
New words：
replace [rɪˈpleɪs] v.取代；代替；更换；更新
replace A with B（用 B 换 A）
replace A as B（A 作为 B 被取代）
displace [dɪsˈpleɪs] v.取代；置换；转移；替代
使原有事物 / 人失去位置”，多含被动意味，强制取代
Sample Sentences：
Don’t forget to replace the tools back in the box.
We can replace sugar with honey in this recipe to make it healthier.
The flood displaced thousands of people.
New technology has displaced many old jobs.
recipe [ˈresəpi] n.食谱；处方；配方；方法；诀窍；
New words：
vain [veɪn] adj.徒劳的；枉然的；无结果的；自负的
in vain [veɪn] 徒劳;白费力气；无用的;无意义的;无价值的
“vain” 的核心词根是拉丁语 “vanus”（意为 “空的、虚无的；徒劳的”）
Sample Sentences：
We made a vain attempt. / We attempted in vain.
I knocked loudly in the vain hope that someone might answer.
She closed her eyes tightly in a vain attempt to hold back the tears.
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.
New words：
persuade [pərˈsweɪd] v. 说服；劝说；使信服；使相信
“persuade” 的核心词根是拉丁语 “suad-”/“suas-”（意为 “劝说、建议”），前缀 “per-” 表“彻底、完全”，共同构成其语义核心。
persuasion [pərˈsweɪʒ(ə)n] n. 说服；劝说
关键搭配：
persuade sb to do sth（说服某人做某事）
I persuaded her to join the team.persuade sb of sth（说服某人相信某事）
He finally persuaded me of his honesty.注意：区别于 advise（仅 “建议”，不强调 “成功说服”），persuade 隐含 “达成说服效果” 的含义。
Sample Sentences：
Her persuasion finally made him change his mind.
They tried in vain to persuade her to see a doctor..
in vain [veɪn] 徒劳;白费力气；无用的;无意义的;无价值的