backup

バックアップ、予備のコピー

元のデータが失われても復元できるよう保存しておくコピー。

やさしい英語で： An extra copy of computer information, kept so you can recover it if the original is lost.

• Make a backup of your files.
• We restored the database from a backup.
• Are your backups stored on a separate drive?

使い方： a backup of something (I made a backup of all my photos.)

類義語： copy

よく使う表現： make a backup, restore a backup, backup of something

予備、代役

必要なときに他の人や物の代わりに使えるよう用意したもの。

やさしい英語で： A person or thing kept ready to replace another if needed.

• We have a backup if this battery fails.
• The team signed a backup for their goalkeeper.
• Keep two backups ready in case either machine breaks.

使い方： a backup for someone/something (We need a backup for the main goalkeeper.)

類義語： replacement, substitute, reserve

よく使う表現： backup for someone, use a backup

代替案、予備の計画

最初の計画がうまくいかない場合に使える別の計画。

やさしい英語で： Another plan you can use if your first plan does not work.

• We need a backup if it rains.
• Her backup was to stay with a friend.
• Do you have a backup in case the restaurant is closed?

使い方： as a backup (We booked an indoor room as a backup.)

類義語： alternative, fallback, plan B

よく使う表現： as a backup, backup for something

滞留、渋滞

流れや移動が妨げられ、車や液体などがたまること。

やさしい英語で： A buildup of vehicles, liquid, or other material because movement has been blocked or slowed.

• The crash caused a traffic backup.
• A sewage backup flooded the basement.
• Drivers faced long backups near the bridge.

類義語： buildup, jam

よく使う表現： traffic backup, sewage backup

予備の、代わりの

主に使う人や物が使えない場合に備えて用意されている。

やさしい英語で： Kept ready to be used if the main person or thing is unavailable.

• We bought a backup battery.
• The backup goalkeeper played after the captain was injured.
• A backup generator kept the hospital running.

類義語： reserve, spare, standby

反対語： main

よく使う表現： backup player, backup generator, backup battery, backup copy