1. 流浪：divagate 流浪 | divagation 流浪 | divalent 二价的

2. 言语散乱：diuretic 利尿剂 | divagation 言语散乱 | divergence 分散

3. 侧滥：侧井距 kickout | 侧滥 divagation | 侧离距 lateral separation

4. 侧滥,两侧泛滥：日变化 diurnal variation | 侧滥,两侧泛滥 divagation | 扩散,发散 divergence

noun

1. a turning aside (of your course or attention or concern)

e.g. a diversion from the main highway
a digression into irrelevant details
a deflection from his goal

Synonym: diversiondeviationdigressiondeflectiondeflexion

2. a message that departs from the main subject

Synonym: digressionasideexcursusparenthesis