chugged

v.

发出（持续而单调的）短声，发出突突声( chug的过去式和过去分词 )；

MARCH-APRIL SALES CHUGGED AHEAD DESPITE BUMPY RIDE.
Company's little train chugged up right track
Show-stopperS in Chattanooga: Antiques Roadshow chugged into Chattanooga on the third leg of its 2008 tour. Here, the highlights.
CSX says 2Q rail profit chugged ahead 4 percent
Free agent chugged costly drink
San Fernando leaders draw a line against high-speed rail
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Understanding Patterns of Economic Growth: Searching for Hills among Plateaus, Mountains, and Plains
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