离开正题 meaning in English
wander from the subject
Examples
- Consequently we digress momentarily in this section to review some well-known definitions and operations .
因此在这一节里，我们暂时离开正题，来复习一下一些熟知的定义及运算。 - His talk branched off from the subject
他的谈话离开正题扯到别处去了。