将这套笨重的设备搬过仓库是一个真正的挑战。

Moving the ___bulky equipment across the warehouse was a real challenge.

这个项目所需的特殊设备不仅昂贵，而且相当笨重。

The special device required for the project was not only expensive but also quite ___bulky.

尽管外观笨重，这个新背包实际上背起来非常舒适。

Despite its ___bulky appearance, the new backpack is actually very comfortable to wear.