unmanned

無人の

内部に操縦する人がいない状態で動く。

やさしい英語で： Operating without a person inside to control it.

• An unmanned aircraft flew overhead.
• The agency launched an unmanned spacecraft to study Mars.
• These unmanned vehicles can be controlled from a distant office.

類義語： uncrewed, pilotless

反対語： manned, crewed

よく使う表現： unmanned aircraft, unmanned spacecraft, unmanned vehicle

無人の

働く人や見張る人がその場にいない。

やさしい英語で： Having no people present to work there or watch over it.

• The reception desk was unmanned.
• We found an unmanned ticket booth at the entrance.
• The guard’s post remained unmanned all night.

類義語： unstaffed, unattended

反対語： staffed, manned

よく使う表現： unmanned reception desk, unmanned station, leave something unmanned