Before operation, check the instrument against the instructions.

操作之前请对照说明书检查仪器。

youdao

All safe guards must be adjusted properly and fixed firmly before operation.

操作机器前，须调整好及牢固所有的安全护盖。

youdao

Before operation, you should do the everyday maintaining according to the operation manual.

操作前，必须按说明书的规定进行日常保养和定期保养。

youdao

Another way to prevent infections is to give patients antibiotic drugs before an operation.

VOA: special.2010.05.25

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.

VOA: special.2010.04.21

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

In this situation, staff would simply carry on administering the prescription that had been issued before the operation.

BBC: Hyponatraemia inquiry: Nurses giving evidence

Before the operation, his son Jason was told his father had a 90% chance of surviving the operation.

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