Tomorrow there will be no schools active across Los Angeles Unified, all before and after programming inclusive of athletic activities.

明天，整个洛杉矶的学校都会停止所有活动，包括之前和之后的体育活动规划。

They are born with bodies that are good for certain kinds of athletic activities.

他们天生的身体适合某些类型的体育活动。

That is, he does a very difficult set of athletic activities or exercises in order to get ready for the fight.

也就是说，他进行了一系列非常困难的体育活动或练习， 以便为战斗做好准备。

" Organized sports" refers to athletic activity, usually involving teens, that is coordinated and organized by some organizations, some group of people.

“有组织的体育运动” 是指体育活动， 通常涉及青少年，由一些组织、一些人协调和组织。