他也研究过该课题。

He, too, has researched the topic.

youdao

在发现吸烟的人有相似的趋势后科学家们决定研究该课题。

Scientists decided to study the topic after a similar trend was found in people who smoke.

youdao

这一点是研究该课题的前辈们普遍认同的，所以无需再旁征博引来加以说明了。

This fact has been so universally acknowledged by previous writers on the subject that it seems hardly necessary to quote individual opinions.

youdao