本 Insight - 中級 - ユニット9 - 9C

a mechanical tool or an electronic device that is useful for doing something

ガジェット, 小道具

favorable or well-suited for a specific purpose or situation

便利な, 都合の良い

having a high price

高価な, 値段が高い

no longer useful or fashionable

having a reasonable price

手頃な, 安価な

(of a system or machine) achieving maximum productivity without wasting much time, effort, or money

効率的な, 生産的な

able to last for a long time without breaking or wearing out easily

耐久性のある, 丈夫な

easily damaged or broken

壊れやすい

able to be trusted to perform consistently well and meet expectations

信頼できる, 頼りになる