Now a new study has provided another contribution to the debate, uncovering strong evidence that adolescent well-being in the United States really is experiencing a decline and arguing that the most likely cause is the electronic riches we have given them
2019年12月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
VERB
揭露，发现（隐秘之事）
If you uncover something, especially something that has been kept secret, you discover or find out about it.