Y: Hey, Patrick, 你怎么一瘸一拐的？
P: I'm limping because my Achilles tendon is killing me! OW!
Y: Poor Patrick.
P: Uh, Yang Chen, do you know what an Achilles tendon is?
Y: Well, not really.
P: Achilles tendon is in the lower back part of your leg. It connects your foot to the muscle.
Y: Oh, 原来你和刘翔一样，得了跟腱炎？
P: Yeah, that's right. He is a little bit faster than me.
Y: A little bit faster?
P: Just a little. He had a problem with his Achilles tendon, too.
Y: 那你是怎么弄伤了你的Achilles tendon？
P: Well, I pulled it running during my warm ups for the 110 meter hurdles.
Y: Aw, that's too bad. (Sarcastically.)
P: Thanks for the sympathy, Yang Chen.
Y: 跟腱为什么叫 "Achilles tendon" 呢?
P: Achilles was an ancient Greek hero.
Y: 阿基里斯是希腊神话里的勇士。
P: He was dunked in a sacred river by his mother, and his mother was holding him by his ankle.
Y: So?
P: So he became invulnerable everywhere the water touched him, except for his heel.
Y: 因为他妈妈抓着他的脚后跟，没沾到神水，就成了他的致命弱点。
P: So when someone has a fatal flaw it is referred to as their "Achilles heel". Because Achilles was killed when an arrow struck him in his heel.
Y: What's your "Achilles heel," Patrick?
P: Oh, I may have a problem with my Achilles tendon, but I don't have an Achilles heel.
Y: Why?
P: I'm perfect!