close together

adj. 密集

例句与用法：

A short cluster of elongated strands, as of yarn, hair, or grass, attached at the base or growing close together.

一簇，一丛连在底坐上或长在一起的小簇细长物质，如毛线，头发或草

Stayed close together.

紧紧地靠在一块

Their birthdays are very close together.

他们的生日紧挨著。

The two buildings are close together.

这两座建筑物距离很近。