They feel I need to bulk up, and to improve my upper body strength.

他们觉得我需要变粗壮些，并增强上身的力量。

《柯林斯英汉双解大词典》

Supplements can be very helpful when you are trying to bulk up your body.

如果想增强你的身体，营养补充品大有裨益。

youdao

Supplements can be very helpful when you are trying to bulk up your body.

如果想增强你的身体，营养补充品大有裨益。

youdao