1. Here a short digression becomes necessary. 这里有必要加一点题外的话。
2. A diversion or deviation from a main topic; a digression. 偏离正题从''。'主题'。''上偏离或离开;离题。
3. The onboard responder antenna drops into or near the rail top which cause the train digression. 车载应答器天线坠入铁轨或其附近,导致列车脱轨。
英英解释
n.
1. a message that departs from the main subject
2. a turning aside (of your course or attention or concern)
3. wandering from the main path of a journey