alphanumeric set
基本释义
文数字集
实用场景例句
学术讨论
The research was costly, but it brought significant results.
研究很昂贵，但它带来了显著成果。
日常对话
The repair was very costly, so we need to save money.
修理非常昂贵，所以我们得存钱。
校园生活
A costly mistake can affect your future career.
一个昂贵的错误会影响你的未来职业。
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