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. 他一反常態，既抑鬱，還陷入了沉思。

2. ruminativelyADV [ADV with v]

He smiles and swirls the ice ruminatively around his almost empty glass. 他微笑著，邊沉思，邊攪動著幾乎空了的盃子中的冰塊。