by a head

基本解釋

He is taller than I by a head.
他比我高一頭。
edu.sina.com.cn
The horse pecked badly , but recovered and won by a head.
這匹馬絆得很厲害，但恢復(fù)過(guò)來(lái)后以一頭的優(yōu)勢(shì)獲勝。
Last September, in a tentative warming between the two sides, Michael Griffin of NASA paid the first trip to China by a head of the American government's space agency.
去年9月，為了試圖尋找雙方友好合作的契機(jī)，美國(guó)國(guó)家航空航天局（NASA）的邁克爾?格里芬對(duì)中國(guó)進(jìn)行了訪問(wèn)，這也是美國(guó)太空總署(space agency)領(lǐng)導(dǎo)人首次訪華。

After the debate, she said that Senator Morse's actions were the result of him being "kicked in the head by a horse."
It was the first visit to Iraq ." by a Turkish head of state in 33 years.
And,it is the head of the obstetrics department who comes by for a final consultation to tell her she and baby Frieda will be going home.

And it must be driven by a head of government (who presumably needs to get enough of the credit not to become jealous of Mr de Soto).
ECONOMIST: Face value