Thank you two so much. About the above sentences I completely understand now. And there are other questions in the same article I feel complex, would you help me?
1.three one-hundredths of a second is 3/100 second?
35 hundredths of a second is 35/100 second?
2.Intense? That was an understatement.
Does the author want to say his training is more than intense because he swims for Olympics?
Here's the context: "Not only do you have allergic asthma, you have exercise-induced asthma too," he said. "The more intense your workouts, the worse your condition could get." Intense? That was an understatement. Heck, my eyes were on the Olympics!
3.I'd gutted through this sort of thing before.
What does "gut through" mean?
The context: I was in the water, racing the other guys. Midway through the race, my chest grew tight. It felt as if someone had wrapped a belt around me and was squeezing as hard as possible. I tried to take a breath. Hardly any air came in. Keep swimming. I¡¯d gutted through this sort of thing before. This time it was just too hard. I dragged myself out of the water.
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