a pet name

It could be that he makes you smile when he calls you a pet name, when he snuggles your children, when he holds the door open for a random stranger, you name it.

可以是当他叫你昵称的时候，当他抱着你们的孩子的时候，当他为随意的陌生人留着门的时候，等等。

The researchers asked 222 volunteers who were involved in a romantic relationship to supply the partner's first name and two other words related to the partner, such as a pet name.

研究人员征集了222名处于恋爱中的志愿者，询问他们伴侣的名以及相关的另外两个单词，比如宠物名。

Rogge and his colleagues devised a test in which volunteers supplied their partner's first name and two other words that related to the person -- like a pet name or distinct characteristic.

Rogge和他的同事们设计的测试中，志愿者提供他们伴侣的第一个名字，还有两个和这个人相关的词语，比如宠物的名字或者明确的特征。