YOU SAID:
String theory is a broad and varied subject that attempts to address a number of deep questions of fundamental physics.
INTO JAPANESE
弦理論基礎物理の深い質問の数に対処しようとする広範かつ多様な主題であります。
BACK INTO ENGLISH
In trying to deal with a number of deep questions of fundamental physics in string theory to a broad and diverse subject matter.
You've done this before, haven't you.