informal <非正式>
no obj.
1noisily release air from the stomach through the mouth; belch
打嗝。
1.1with obj. make (a baby) belch after feeding, typically by patting its back
（轻轻拍背）使（婴儿）打嗝。
a noise made by air released from the stomach through the mouth; a belch
打嗝声。
词源
1930s (originally)： imitative.