cluster of workstations

例句：

1. 1.The students are clustered around the teacher's desk.
   学生们围绕着老师的桌子聚集在一起。
2. 2. The clusters of grapes are ripe for picking.
   这些葡萄串已经成熟，可以采摘了。
3. 3. The scientists found a cluster of fossils in the cave.
   科学家们在洞穴里发现了一个化石群。