1. 枝节的：digressdigressiondivagateirrelvancevagrancy 离题 | digressive 枝节的 | digressiveexcursivetangential 离题的

2. 枝节的/离题的：digression /离题/扯到枝节上/脱轨/ | digressive /枝节的/离题的/ | digressively /脱节地/题外地/

3. 離題的：congress 國會 | digressive 離題的 | progress 進展

1. (of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects

    e.g. amusingly digressive with satirical thrusts at women''s fashions among other things
           a rambling discursive book
           his excursive remarks
           a rambling speech about this and that

    Synonym: discursiveexcursiverambling

2. of superficial relevance if any

    e.g. a digressive allusion to the day of the week
           a tangential remark

    Synonym: tangential