hiccupping
打嗝（ hiccup 的现在分词）
例句
It has been suggested that yawning and hiccupping might serve to clear out the fetuses airways.
有人提出，打哈欠和打嗝可能有助于清理胎儿的气道。
When did he stop hiccupping?
他什么时间停止打嗝？
Who has the world record for hiccupping?
谁有打嗝的世界记录？
