emery rock

常見例句

• The emery is a hard metallic substance.
  金剛砂是非常堅硬的金屬物質(zhì)。
• She rubbed the glass with emery paper.
  她用砂紙磨玻璃。
• The rock was honeycombed with passages.
  巖石上有許多蜂窩狀的小孔。
• Many young rock hounds grow up to be geologists.
  許許多多愛好收集巖石的少年，長大后成了地質(zhì)學家。
• The climber had to negotiate a steep rock face.
  那攀登者得攀越一陡峭巖石。
• This layer of rock contains a lot of flint.
  這一巖層中有大量燧石。
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