the time in the past when tools and weapons were made of bronze (= a brown metal made of copper and tin), before iron was discovered

It is thought that Stonehenge was constructed during the Bronze Age. 人们认为巨石阵建立于青铜时代。

The remains of a 2,300-year-old cargo boat were found here, left by Bronze Age man. 在这里发现了一艘有2300年历史的货船遗迹，是青铜时代的人类留下的。