A-17: Achilles'heel 唯一致命的弱点
A：Smith is always careless,it is his Achilles'heel.
A: 史密斯总是太粗心了，这是他性格上致命的弱点。
B: He would get very angry if anyone criticized him.
B：如果你批评他这一点，他就会生气。
A: He will burn his fingers.
A: 他会吃苦头的。
B: If only he knew it.
B：要是他知道这一点就好了。
