学个词 Learn a Word-VOA英语教学 3155 erosion

今天我们要学的词是 erosion。

Erosion 的意思是侵蚀、腐蚀。A new high-speed rail station linking Hong Kong and mainland China opened under Beijing authority, raising new worries among Hong Kong residents of a further erosion of the territory's autonomy，连接香港与中国大陆的高铁在香港境内的高铁站启用，但受北京当局管辖，引起香港居民对自治权进一步受到侵蚀的担忧。A study last year concluded sediment¹ from erosion following fires would more than double by 2050 for about a third of western watersheds，去年的一项研究表明，火灾后地表侵蚀的沉积物在2050年前将在大约三分之一美国西部水域增加一倍以上。

1 sediment   

n.沉淀，沉渣，沉积(物)

参考例句：

• The sediment settled and the water was clear.杂质沉淀后，水变清了。
• Sediment begins to choke the channel's opening.沉积物开始淤塞河道口。