囚犯被关在一个没有窗户的小牢房里。

The prisoner was locked in a small ___cell without windows.

每个细胞都含有遗传物质DNA。

Every ___cell contains genetic material called DNA.

我的遥控器需要两节电池才能工作。

My remote control needs two ___cells to work.

警方发现了一个正在策划银行抢劫的秘密小组。

The police discovered a secret ___cell planning a bank robbery.

蜂巢由许多六边形的小蜂房组成。

The beehive is made up of many small hexagonal ___cells.