before operation

常见例句

Angina before operation is a serious problem .
手术前心绞痛是严重问题。
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Before operation, check the instrument against the instructions.
操作之前请对照说明书检查仪器。
Before operation, special consideration must be given to pressure limitations, system containment, purging requirements, etc. , to determine if additional safety measures are required.
在操作前，必须对压力极限、系统容积、净化要求等专门考虑，以决定是否要求额外的安全措施。

Another way to prevent infections is to give patients antibiotic drugs before an operation.
And that operation is being performed before others.
并且那个操作是在其它操作之前的。
哈佛公开课 - 计算机科学课程节选
Doctors are advised to give them within the hour before the operation.

Though I cannot discuss details in an open setting, as a member of the Senate Intelligence Committee, I can tell you that before Operation Iraqi Freedom we had very little human intelligence in Iraq, and, therefore, the INC provided one of the best--and only--avenues for acquiring intelligence on Saddam Hussein's regime.12 I believe the Department of Defense would conclude it was useful.
CENTERFORSECURITYPOLICY: Center For Security Policy
The President joined us then early afternoon before the operation got underway.
WHITEHOUSE: Press Briefing