RF组与S组的起效时间和首剂持续时间无显著性差异（P>0.05）； RF组局麻药总用量明显少于R组（P<0.01）。

There was no significant difference between group RF and group S (P>0.05) and the total dose of local anesthetic in group RF was significant less than that in group R (P<0.01).

youdao

杰夫：运动员宣誓誓词中首提到了兴奋剂，结果还是查出来了。

Jeff: in the oath of the athletes, anti - doping is mentioned for first time officially.

youdao

Now I believe that music works a magical potion, a magical spell on us.

我相信这首曲子就像一剂魔药,一段施在我们身上的符咒

耶鲁公开课 - 聆听音乐课程节选