因为您需要它建立和维护精瘦的身体大量，吃含精瘦的蛋白质食品对健康好是关键的。

Eating lean protein is crucial to good health because you need it to build and maintain lean body mass.

youdao

那是当然。我很精瘦。精瘦的动物的肠线是最结实的。

Of course you were. I'm lean. Lean animals yield the toughest gut.

youdao

那是当然。我很精瘦。精瘦的动物的肠线是最结实的。

Of course you were. I'm lean. Lean animals yield the toughest gut.

youdao