deterioration

悪化、劣化

品質、状態、健康などが悪くなっていくこと。

やさしい英語で： The process of becoming worse in quality, condition, or health.

• We noticed a deterioration in her health.
• Regular repairs can prevent further deterioration.
• The building showed signs of deterioration after years of neglect.

使い方： deterioration in something (Doctors noticed a deterioration in his health.); deterioration of something (Damp caused the deterioration of the wooden floor.)

類義語： decline, worsening, decay

反対語： improvement

よく使う表現： rapid deterioration, deterioration in something, prevent deterioration

劣化期間

何かの状態が悪くなっていく期間。

やさしい英語で： The period of time during which something becomes worse.

• The deterioration lasted several years.
• During the deterioration, repairs became increasingly difficult.
• A brief deterioration was followed by a long recovery.

類義語： period of decline

よく使う表現： a long deterioration, a brief deterioration, during the deterioration