?? 詞語組成解析
hangover
[['h???uv?]]
n. 宿醉, 殘留物, 遺物\\n[電] 殘存物
??? 情景例句
Excuse me, ma'am.
對不起 夫人
Excuse me I couldn't come.
對不起我不能來。
and because there is so much of it the function would seem to e important.
睡眠占去那么多時間,所以其作用似乎還是很重要。