Listing 1 is a recap of the simple Person class I've used in my introduction to db4o so far.

清单1重述了我在介绍db4o时一直使用的一个简单类person。

youdao

He would be just the person. Could you give me a letter of introduction?

他就是我要找的人，可否请你给我写一封介绍信？

youdao

The image of a person is a non-word letter of introduction. People can through your language, behavior, appearance to know what kind of a person you are.

一个人的形象是一封无字的介绍信。人们通过你的语言、行为、仪表，就能判断出你是一个什么样的人。

youdao

The Todd family were angered by the introduction on Tuesday of a witness - said to be the last person to see Shane Todd alive - who they had not been able to vet properly.

BBC: Parents quit Singapore probe into Shane Todd death

Inside Google, Compute Engine was considered a "defensive" move against Amazon Web Services, according to a person familiar with the deliberations that led to the introduction of Google's service.

WSJ: Google Follows Amazon's Lead on New Shopping Site, Delivery, Other Services

Whether you are asking for a job introduction or a dentist recommendation, the effectiveness of your request to any specific friend comes down to willingness (will this person get back to me?) and ability (will this person know the contact I need?).

FORBES: How To Get What You Want From Anyone By Addressing These Two Issues