第二是与食物对身体的主要用途有关，即食物供给身体活动所需的能量。

The second is connected with the main use the body makes of food-to supply the energy for movement.

youdao

第二是与食物对身体的主要用途有关，即食物供给身体活动所需的能量。

The second is connected with the main use the body makes of food-to supply the energy for movement.

youdao