New words:

permanent [ˈpɜrmənənt] adj.永久的;持久的;固定的
permanently ['pɜːmənəntli] adv.永久地;永远;长期;一直

详细词源拆解:

per- = 前缀:贯穿、始终、从头到尾
man = 词根:停留、保持(来自拉丁语 manere = stay 停留)
-ent = 形容词后缀
整体逻辑:始终停留不变的 → 永久的;持久的

词汇链:

permanent(adj. 永久的)→ permanently(adv. 永久地)→ permanence(n. 永恒)

必记高频搭配

permanent resident(永久居民)

He became a permanent resident last year.

permanent job(固定工作;长期工作)

She wants a permanent job.

permanent address(固定地址)

Please write down your permanent address.

permanent damage(永久性伤害)

The accident caused permanent damage to his leg.

permanently damaged(永久性损坏)

The file was permanently damaged.

反义词:
temporary [ˈtempəˌreri] adj.暂时的;临时的;短暂的

例句:This is permanent, not temporary.

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