costly 

  1. 形容詞
昂貴的
代價高的, 費用大的
貴重的, 寶貴的
奢華的

    同義字詞
big-ticket,dear,expensive,extravagant,high,high-end,high-ticket,precious,premium,priceless,pricey,pricy,ultraexpensive,valuable

例句

  1. It used to be cumbersome and costly .
  2. Making a shell is costly for a snail.
  3. How can costly behaviour encourage altruism?
  4. One from the less costly materials is steel.
  5. A little oversight has never been so costly .