Judging from the width and depth of the channels, the flow rates must have been truly enormous―perhaps as much as a hundred times greater than the 105 tons per second carried by the great Amazon river
Judging from the width and depth of the channels在句子中做什么成分?
破折号后面的做什么成分?怎么理解?
carried by the great Amazon river又是什么的定语?
请问Judge后面的成分是什么状语呢?