New words：
implicit [ɪmˈplɪsɪt] adj.含蓄的；不直接言明的；成为一部分的；内含的implicitly [ɪm'plɪsɪtlɪ] adv.暗中地；含蓄地；隐含地
必记高频搭配
implicit meaning（含蓄的意思；言外之意）
It’s hard to understand her implicit meaning.
implicit rule（潜规则；不成文的规定）
Be quiet in class is an implicit rule.
implicitly agree/approve 默许；含蓄地同意
When she nodded her head, she implicitly agreed to our plan.
New words：
explicitly [ɪk'splɪsɪtli] adv.明确地；显然；清楚地；直接地
必记高频搭配
say explicitly 明确地说
Please say explicitly whether you agree or not.
explicitly state/explain 明确说明 / 解释
The manager explicitly stated that everyone must finish the task on time.
写作提分替换（基础表达→高级表达）
明确地说 → say clearly → say explicitly / explicitly state
清楚的指示 → clear instructions → explicit instructions
含蓄地表达 → express indirectly → express implicitly
绝对信任 → trust completely → trust implicitly
明确指出 → point out clearly → explicitly point out
New words：
explicit [ɪkˈsplɪsɪt] adj.清楚明白的；易于理解的；明确的；直言的
必记高频搭配
be explicit about sth 对某事说得很清楚 / 很直白
He was explicit about his opinion.make sth explicit 把某事讲清楚、明确表达
She made it explicit that she would not give up.an explicit person 直言不讳的人
She is an explicit person who never hides her opinions.The map shows an explicit route to me.
You must give explicit answers to the questions.
route [rut] n.路线；路途；固定线路；途径
New words：
efficiency [ɪˈfɪʃnsi] n.效率；效能；功效inefficiency [ˌɪnɪˈfɪʃnsi] n. 低效；无能
必记高频搭配
improve efficiency 提高效率
Making a study plan is a good way to improve efficiency.
increase efficiency 提升效率
New machines can greatly increase efficiency in the factory.（
avoid inefficiency 避免低效
Making a plan before working can avoid inefficiency.
New words：
efficiently [ɪ'fɪʃ(ə)ntli] adv.有效率地；有效地；效率高地井井有条地inefficient [ˌɪnɪˈfɪʃ(ə)nt] adj.效率低的；能力差的；浪费的
必记高频搭配
work/study efficiently 高效地工作 / 学习
If you want to have more free time, you need to study efficiently.
use time/resource efficiently 高效利用时间 / 资源
We should use time efficiently in our daily life.
an inefficient method 低效的方法
This inefficient method wastes a lot of our time.