expensive

高い、高価な

多くのお金がかかる、または手に入れるのに大きな労力がいる。

やさしい英語で： Costing a lot of money or requiring a lot of effort to get.

• That coat is expensive.
• We stayed in a less expensive hotel.
• Why are train tickets so expensive?

使い方： expensive to do something (This car is expensive to repair.)

類義語： costly, pricey

反対語： cheap, inexpensive

よく使う表現： expensive clothes, too expensive, expensive to buy, expensive car

計算コストの高い

コンピューターの時間、メモリ、処理能力を多く使う。

やさしい英語で： Using a lot of computer time, memory, or processing power.

• This calculation is expensive.
• We replaced the expensive algorithm with a faster one.
• Repeated database searches can be expensive.

類義語： resource-intensive, costly

反対語： cheap

よく使う表現： expensive operation, expensive computation, computationally expensive