...are seldom able to identify their offenders...(Para. 15)
identify: vt. determine exactly who someone is or what something is
Please note that you learned this word in passage B, Unit 2. Be sure to learn how to use the word correctly!
I've seen enough criminal trials to know victims of armed attacks are seldom able to identify their offenders because their attention focuses on the guns, rather than on their users. 我看过许多刑事审判，因而知道在那些武装袭击的受害者中，很少有人能够辨认出袭击他们的人，因为他们的注意力全集中在枪上，而没有放在持枪人上。(Para. 15)
He asked me to come to the station and identify these two robbers in the photos they kept. 他让我到警局去从他们弄到的照片上辩认那两个疑犯。(Para. 30)
offender: n. a person who offends against the law
offend: v. 1. break a law, etc.
What he had done offended against the rules of proper behavior. 他的所作所为违背了行为举止得体的准则。
2. make someone feel upset or angry
When you visit another country and do not understand the customs, it is easy to offend people. 当你访问一个国家，而不了解该国的风俗习惯，就很容易让人不愉快。
They were offended when she did not come to their wedding. 她没有参加他们的婚礼，他们对此很不高兴。