have has 句子中的意思 In recent years the focus has inte

问题补充：

have has 句子中的意思,In recent years the focus has intensified as scientists have learned more about its importance.并翻译之.

答案：

这个句子没有提供上文内容,无法所指的特定事物,只能将句子按字面意思翻译如下：In recent years the focus has intensified as scientists have learned more about its importance.近年来,当科学家们已经更了解到关...