divagation
n. 偏差；离题；离正轨；入歧途
近义词：digression，diversion，aside，deflection，deviation，parenthesis，excursus，deflexion，
英英释义
Noun
- a message that departs from the main subject
- a turning aside (of your course or attention or concern);
"a diversion from the main highway" "a digression into irrelevant details" "a deflection from his goal"