chug along
1. To move forward slowly, as of a train (which stereotypically makes a chugging noise). The train is chugging along again, so we should be at the station soon.
2. To proceed steadily. Don't worry, the project is still chugging along, in spite of all the setbacks.
chug along
1. Lit. [for a train engine] to labor along slowly. (Steam locomotives made the sound "chug, chug.") The train chugged along to the top of the hill.
2. Fig. to move along at a steady pace. We chugged along for two hours but finally made it home.