A biopsy is usually a minor surgical procedure.

活组织检查通常是一个很小的外科手术。

Police insist that Michael did not follow the correct procedure in applying for a visa.

警方坚持称迈克尔没有按照正确的程序申请签证。

The White House said there would be no change in procedure.

白宫说程序上不会发生变化。