vi.不均匀燃烧(功率突变)
The boat chugged along the canal. 小船稳稳地顺著运河突突地航行。
The loser of a game is required to chug a beer. 输掉比赛的人要喝干一杯啤酒。
The train chugged through the mountains. 火车在群山中行进，发出咔嚓咔嚓的声间。
The motorboat chugged its way into the harbour. 汽艇突突地驶入港口。
The machine chugged,whined and stopped. 机器咯吱咯吱地响着，哼唧着，最后不动了。
