home straight

基本解释

The racing car powered down the home straight.
賽車在終點直道上急馳。
http://dict.hjenglish.com
For two decades, Chile was the “teacher’s pet” of Latin America, the student who always brought home straight A’s.
在過去20年，智利一直是拉丁美洲的優秀學生，每次都能直接拿A廻家。
Declare that the way Asian-American parents succeed in raising such successful children is by denying them play dates and sleepovers, and demanding that they bring home straight A’s.
說美國的亞裔家長能夠培養出如此優秀的孩子的原因就是，不準約會、不準在朋友家過夜、成勣要全A。

So, you can confirm that for yourself at home, but in fact, if I draw a straight line, this will actually be correct.
你要是不信廻去自己騐証一下,事實上我畫成直線,是絕對正確的
耶魯公開課 - 博弈論課程節選