地板上有一条很深的凹槽用来排水。
There is a deep ___groove on the floor for water drainage.
每天的晨跑让他找到了一种舒适的规律。
His daily morning jog helped him find a comfortable ___groove.
这首歌的节奏感很强,让人忍不住想跳舞。
The ___groove in this song is so catchy that you can't help but dance.