New words：
visible /ˈvɪzəbl/ adj.看得见的；可见的；明显的；能注意到的
必记高频搭配
clearly visible 清晰可见的
The top of the mountain is clearly visible today.barely visible 几乎看不见的
The word on the blackboard is barely visible.visible light 可见光
We can only see visible light with our eyes.visible change 明显的变化
There has been a visible change in his study habits.make…visible 使…… 看得见
The map makes the key places visible.
New words：
vision /ˈvɪʒn/ n.视野；视力；想象力；远见
必记高频搭配
good eyesight / good vision 好视力
Good vision is very important for our study and life.
protect one’s vision 保护视力
We should do eye exercises to protect our vision.
lose one’s vision 失明；丧失视力
The old man lost his vision in an accident.
a person of vision 有远见的人
A successful leader is always a person of vision.
have a vision of… 想象；展望
She has a vision of a better future.
New words：
visual /ˈvɪʒuəl/ adj.视力的；视觉的；可视化的
详细词源拆解：
vis / vid = 看（来自拉丁语 videre = see 看）
-ual = 形容词后缀
整体逻辑：看的 → 视觉的；看得见的
词汇链：
see → vis → visual（视觉的）→ vision（视力；视野）→ visible（看得见的）
必记高频搭配
visual effect 视觉效果
Good visual effects make the movie more interesting.visual aids 视觉教具；辅助工具
Teachers use visual aids to make classes easier to understand.visual health 视觉健康
Spending too much time on screens is bad for our visual health.New words：
temporary [ˈtempəˌreri] adj.暂时的；临时的；短暂的temporarily ['temprerəlɪ] adv.暂时地；临时地
详细词源拆解：
temper = 时间、季节（来自拉丁语 tempus = time）
-ary = 形容词后缀
整体逻辑：只跟一段时间有关的 → 暂时的、临时的
词汇链：
temporary（adj. 暂时的）→ temporarily（adv. 暂时地）→ temporariness（n. 暂时性）
必记高频搭配
temporary job（临时工作）
Many students take a temporary job during the summer holiday.temporary home / house（临时住所）
The government provided temporary houses for the homeless.temporarily closed 临时关闭
The sports center is temporarily closed because of the bad weather.
New words：
permanence [ˈpɜrmənəns] n.持久性；永久
详细词源拆解：
per- = 从头到尾、始终、贯穿
man = 停留、保持（拉丁语 manere = stay 停留）
-ence = 抽象名词后缀，表示状态、性质
整体逻辑：始终停留不变的状态 → 永恒；永久；持久
词汇链：
permanent（adj. 永久的）→ permanently（adv. 永久地）→ permanence（n. 永恒、持久）
必记高频搭配
the permanence of peace（和平的永恒 / 持久）
We all want the permanence of peace.the permanence of love（爱的永恒）
They believe in the permanence of love.a sense of permanence（永恒感；安定感）
Home gives us a sense of permanence.