Heaven knows
天知道, 確實(shí)無疑地
?? 詞語組成解析
heaven
['h?vn]
n. 天;天堂;上帝;極樂;
v. 知道（know的第三人稱單數(shù)形式）
??? 情景例句
Does this car have good fuel economy?
這種車省油嗎？
I asked him if he spoke English.
我問他他是否說英語。
The assistant who served her did not like the way she was dressed.
接待她的售貨員不喜歡她的那副打扮，