operate派生词:  operation
The surgeon has performed the operation.外科医生做了手术。
The gown a surgeon wears during an operation is usually green.外科医生在做手术时穿的手术服通常是绿色的。
The government underwrotethe initial costs of the operation.政府为该项活动提供了开办时所需的费用。
When does the new law come into operation?这项新法律何时生效
The surgeon is performing a delicate operation.那位外科医生正在做一个很精细的手术。