ruminative

1. ADJ If you are ruminative, you are thinking very deeply and carefully about something. 沉思的[正式]

He was uncharacteristically depressed and ruminative. 他一反常态，既抑郁，还陷入了沉思。

2. ruminativelyADV [ADV with v]

He smiles and swirls the ice ruminatively around his almost empty glass. 他微笑着，边沉思，边搅动着几乎空了的杯子中的冰块。