第二导演组是指专门拍摄“动作部分”的团队，与第一导演组分开工作。

The second director group is a team that will focus on the movie's "action sequences" and will work separately from the first director group.

youdao

在戏剧中人们不可能呈现由多个同时进行的分枝构成的行动，人们只能局限在由演员在舞台上表演的动作部分。

In a play one cannot represent an action with a number of parts going on simultaneously; one is limited to the part on the stage and connected with the actors.

youdao

事实上，我认为它很难理解，就是到底发生了什么，即故事中的动作部分，也可能是我读得太快的缘故，所以不太理解罢，比《梅尼洛斯》更难懂吗，不是的。

I actually thought it was hard to understand, just what was happening, the action part of the story. It might have been that I read it too quickly. Uh huh. Harder than "Menelaiad" to understand? No.

youdao

Parts of it may be even at zero bar, if I go really fast.

如果我动作太快，某些部分甚至会是零巴。

麻省理工公开课 - 热力学与动力学课程节选

I actually thought it was hard to understand, just what was happening, the action part of the story. It might have been that I read it too quickly. Uh huh. Harder than "Menelaiad" to understand? No.

事实上，我认为它很难理解，就是到底发生了什么，即故事中的动作部分，也可能是我读得太快的缘故,所以不太理解罢，比《梅尼洛斯》更难懂吗，不是的。

耶鲁公开课 - 1945年后的美国小说课程节选