1 (used about speech and writing) too slow and careful; serious and boring ﹙言语或文字﹚慢条斯理的， 沉闷乏味的: He spoke in a slow ponderous voice. 他慢条斯理地开口说话。

2 moving slowly and heavily; able to move only slowly 缓慢的；笨拙的；笨重的: She watched the cow's ponderous progress. 她看着牛迟缓地向前走着。