My friend is obsessed with going to the gym and has really bulked up her arms.

我朋友迷上了去健身房，她确实把胳膊练得粗壮了。

A dozen petticoats bulked out her figure.

十几条衬裙把她的身体撑得圆鼓鼓的。

The food needs to be bulked up with high fibre ingredients.

这种食物需要用高纤成分使之胀大。

Their roots bulked above the ground and the branches were twisted.

地面盘根错节，树身枝干缠绕。

Its lightweight design allows its operator to change positions freely without being bulked down.

其轻巧的设计，允许其经营者变更，恕不膨体下来的职位，自由。