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1·The CAS Registry Number itself has no chemical significance.

CAS注册号本身没有化学意义。

2·No candidate, regardless of their registration category, is permitted to register for theory of knowledge or the CAS programme more than once in the same session.

没有候选人，无论他们的注册类别，允许注册的理论知识或中科院项目不止一次在同一个会话。

3·Results: There was no obvious difference in controlling premature ventricular beats, but amiodaron was much better than propafenone in improving cardiac function and decreasing cas…

结果：两者对室早的控制无明显差异，而可达龙在心改善功能及降低病死率方面明显优于心律平。

4·A dog has no use for fancy cas... or big homes or designer clothes.

狗狗用不着豪华轿车，或一间大房子，或量身定做的衣服。