A nine-year-old central California boy braved strong currents and cold water to swim from San Francisco to Alcatraz Island and back.
2019年6月四级真题（第一套）听力 Section A
英语六级真题
The picture worsens with each round of El Nino, the unusually warm currents in the Pacific Ocean that drive up temperatures and invariably presage (预示) droughts and fires in the rain forest.
出自-2013年6月阅读原文
The unusual warm currents in the Pacific Ocean
出自-2013年6月阅读原文
柯林斯高阶英汉双解学习词典释义
N-COUNT
(河、湖或海的)水流，潮流
A current is a steady and continuous flowing movement of some of the water in a river, lake, or sea.