2. Have you ever done this operation before? 你以前都是这样做手术的吗?
3. Operate guidebook:Mouse left key operation, each doors can go in. 操作指南:鼠标左键操作,每扇门都可以进去哦。
英英解释
n.
1. a business especially one run on a large scale
2. a planned activity involving many people performing various actions
3. a process or series of acts especially of a practical or mechanical nature involved in a particular
4. the state of being in effect or being operative
5. a medical procedure involving an incision with instruments; performed to repair damage or arrest dis
6. activity by a military or naval force (as a maneuver or campaign)
7. (computer science) data processing in which the result is completely specified by a rule (especially
8. process or manner of functioning or operating
9. (mathematics) calculation by mathematical methods
10. (psychology) the performance of some composite cognitive activity; an operation that affects mental
11. the activity of operating something (a machine or business etc.)