1. He was clumping about the kitchen in heavy boots. 他穿着笨重的靴子在厨房走来走去。
2. Polarity in it's very nature spins in a manner that causes energy to coagulate or clump in one place and lack in another. 极性在它以一种方式旋转的特别性质中，导致能量在某处凝结或凝块，而在另一处却没有能量。
3. As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar. 当我们的星云在自身重力作用下崩溃和更加快速地旋转时，星云中心形成了密集的物质块。这叫做原恒星。
英英解释
n.
1. a grouping of a number of similar things
2. a compact mass
3. a heavy dull sound (as made by impact of heavy objects) v.
1. make or move along with a sound as of a horse's hooves striking the ground
2. come together as in a cluster or flock
3. walk clumsily
4. gather or cause to gather into a cluster
