As that by which 的文法解析

"The sunlight bends outward when it exits the water by an angle equal to that by which it bent inward when it entered the water."


"The sunlight bends outward when it exits the water by the same angle as that by which it bent inward when it entered the water."


請幫我作此兩句的文法解析及翻譯,謝謝
更新: Hi, Tim

所以第一句可還原為:
"The sunlight bends outward when it exits the water by an angle equal to an angle which it bent inward when it entered the water by."
更新 2: 第二句可還原為:
"The sunlight bends outward when it exits the water by the same angle as the angle which it bent inward when it entered the water by."

對嗎?
2 個解答 2