Significats de investigating the subject en anglès

I chanced to be investigating the subject of "juvenile books."

A long time might be spent investigating the subject; here there is room only for a hasty glance.

On investigating the subject, physicians discovered on this side a kind of herb which the cattle chew and thus make their spleen small.

After investigating the subject Colyer made a written statement to the effect that the United States was wholly justified in demanding detention of the rams.