This is the basic loop with a roll (usually a snap roll) at the top of the loop. The roll has to be centered at the top of the loop.

这个动作是一个基本的筋斗加一个在筋斗顶部的横滚（通常是快滚）。横滚必须在筋斗的顶点做。

youdao

If the assessment is done at the organization level, a framework for discussion centered on key areas of collaboration may be particularly helpful.

如果评估在组织水平上进行，讨论的框架就集中在可以显著帮助的关键协作领域上。

youdao

For example, a master data management solution might be centered on part information or vehicle information at an automotive manufacturer.

例如，对于汽车制造商，主数据管理解决方案可能集中于零件信息或车辆信息。

youdao

Sunday's activities will be centered at Crissy Field and Marina Green, along the northern waterfront of San Francisco.

CNN: Golden Gate Bridge turns 75 with party

It was decided from the beginning that the festival would be centered at an area of the park called Congo Square.

FORBES: New Orleans Jazz Fest Comes Full Circle With Its Mission

If there were no correlation between prosperity and distance from the equator, we would expect the green line to be centered at zero with random oscillations due to noise in the data.

FORBES: The correlation is there.