haKK [hɑ] /hɑ/發音感嘆詞1哈、哼表得意或嘲諷Ha! I knew you would come crawling back to me.哈，我就知道你會乖乖回來求我。2咦、啊表驚訝或疑惑Ha, so that's where my keys have been hiding.咦，原來我的鑰匙躲在這裡。3哈哈常疊用Ha ha, that was the worst joke I've heard all week.哈哈，那是我這週聽過最爛的笑話。名詞1公頃縮寫The farm covers about fifty ha of flat land.這座農場占地約五十公頃的平地。