cleavage spindle

例句：

1. 1. The cell is divided into two halves by a cleavage spindle.
   细胞通过一个断裂纺锤分成两半。
2. 2. During mitosis, the chromosomes are pulled apart by the division spindle.
   在有丝分裂过程中，染色体被断裂纺锤拉开。
3. 3.The spindle fibers of the pollen grain are responsible for transmitting the genetic material to the ovule.
   花粉粒的纺锤纤维负责将遗传物质传递给胚珠。