sunset

日没、日の入り

夕方、太陽が地平線や水平線の下に沈んで見えなくなる時。

やさしい英語で： The time in the evening when the sun disappears below the line where land or sea meets sky.

• We walked home at sunset.
• The sunset turned the clouds pink.
• Have you seen the sunsets from this beach?

類義語： sundown

反対語： sunrise

よく使う表現： at sunset, watch the sunset, beautiful sunset

晩年、末期

人の一生や物事の存続期間の最後の時期。

やさしい英語で： The last part of someone's life or of something's existence.

• He enjoyed his sunset years by the sea.
• She found peace in the sunset of her life.
• The book describes the sunset of a once powerful empire.

類義語： decline

よく使う表現： sunset years, sunset of life

失効日、終了日

法律や規則、取り決めが、更新されなければ効力を失う所定の日。

やさしい英語で： A fixed date when a law, rule, or arrangement stops applying unless it is renewed.

• The law includes a sunset clause.
• They set a sunset of five years for the agreement.
• The tax exemption has a sunset provision requiring renewal.

類義語： expiry date, expiration date

よく使う表現： sunset clause, sunset provision, statutory sunset

段階的に廃止する、提供を終了する

製品やサービス、仕組みの提供や使用を少しずつやめる。

やさしい英語で： To gradually stop providing or using a product, service, or system.

• We plan to sunset this service.
• The company sunsetted its oldest software last year.
• They are sunsetting the platform as customers move to its replacement.

類義語： phase out, discontinue, retire

よく使う表現： sunset a product, sunset a service, sunset old software