She was so tired, her eyelids were beginning to droop.她太疲倦了,眼睑开始往下垂。Don't let your spirits droop.不要萎靡不振.See how they hang their heads and droop, and wither.看!它们不是低着头,弯下腰, 就要枯萎了吗?...
In the distance I could hear the chug of farm machinery.离老远,我都能听到农机具的突突声。Busy boasts chug and scurry about the river - racy speed boat, stolid, snorting tugs.繁忙的船只在河上鸣叫着来来往往 - --高速快艇和笨头笨脑喘着气的拖驳.Chug Chug Chug , Toot Toot...