migrating birds affect ecosystems both at home and at their winter destinations, and disrupting the traditional routes could have unexpected side effects.
2017年6月六級真題（第三套）閱讀 Section C
Writing in the journal, the scientists describe how the storks from Germany were clearly affected by the presence of waste sites, with four out of six birds that survived for at least five months overwintering on rubbish dumps in northern Morocco, instead
2017年6月六級真題（第三套）閱讀 Section C
柯林斯高階英漢雙解學習詞典釋義
VERB
移居，遷徙(尤指到外地尋找工作或暫住一段時間)
If people migrate, they move from one place to another, especially in order to find work or to live somewhere for a short time.
When birds, fish, or animals migrate, they move at a particular season from one part of the world or from one part of a country to another, usually in order to breed or to find new feeding grounds.