Sub-circulation

常见例句

• I had to sub for the referee, who was sick.
  裁判病了，我得代为裁判。
• Pound notes have been withdrawn from circulation.
  一英镑面值的钞票已停止流通。
• Harvey discovered the circulation of the blood.
  哈唯发现了血液循环。
• We observed the circulation of blood in frogs.
  我们观察了青蛙的血液循环。
• The old coins have been withdrawn from circulation.
  旧硬币已经收回不再流通了。
• Many forged notes are in circulation.
  许多假钞在流通。
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