因为此研究用最短的时间和以前接受过训练的大学生棒球运动员，这或许意味着这项研究需要更长时间必要性。

Because this study used the minimum amount of time and previously trained college baseball players, it may have been necessary for this study to be conducted for a longer period.

youdao

因为此研究用最短的时间和以前接受过训练的大学生棒球运动员，这或许意味着这项研究需要更长时间必要性。

Because this study used the minimum amount of time and previously trained college baseball players, it may have been necessary for this study to be conducted for a longer period.

youdao