2 ha

ha
interj
1 (used to express surprise, joy, triumph, suspicion, etc 用以表示惊奇、 快乐、 得意、 疑惑等)
2 (also ha! ha!) (used in print to indicate laughter; when spoken used ironically 书写或印刷中用以表示大笑声; 用於口头时含讥讽之意). ha v (idm 习语) hum and ha => hum. ha abbr 缩写 = hectare(s).