You must know the lab rules before the first lab lessons.

在上第一堂实验课之前，你必须了解实验规则。

youdao

The lab staff shall keep the lab clean according to the lab rules and regulations.

实验人员须按实验室规章制度做好实验室清洁工作。

youdao

Listen carefully when your teacher reads and explains the rules before your first lab lesson.

当你的老师在你的第一堂实验课前阅读和解释规则时，请仔细听。

youdao

Linden Lab's rules now say the land is a service the company controls and can cancel.

CNN: Can people actually 'own' virtual land?

Biophysical Corporation, the Austin, Texas--based firm that created the Biophysical250, is affiliated with Rules-Based Medicine, a lab that's received biomarker research grants from, among others, the National Cancer Institute.

FORBES: Magazine Article

Dr. Andreas Weigend, former Chief Scientist at Amazon.com who now teaches at Stanford and directs the Social Data Lab, delivered an excellent presentation titled How to Use Social Data to Rewrite the Rules.

FORBES: Lessons Learned at Stanford's Digital Marketing Program