灰尘和毛发在角落里积聚成一团。

Dust and hair ___agglomerate into a clump in the corner.

科学家们在显微镜下观察到了细胞团块。

Scientists observed the ___agglomerate of cells under the microscope.

灰尘和杂物在角落里杂乱地堆积起来。

Dust and debris ___agglomerated messily in the corner.