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月四級真題（第一套）聽力 Section A
英語六級真題
The picture worsens with each round of El Nino, the unusually warm currents in the Pacific Ocean that drive up temperatures and invariably presage (預示) droughts and fires in the rain forest.
出自-2013年6月閱讀原文
The unusual warm currents in the Pacific Ocean
出自-2013年6月閱讀原文
柯林斯高階英漢雙解學習詞典釋義
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.