祝高考胜利的英语表达可以有以下几种：

Wish you success in the college entrance exam.

I wish you the best of luck in the college entrance exam.

Wish you a great success in the College Entrance Examination.

May you succeed in the college entrance exam.

Good luck on your Gaokao.

Good luck for your exam and do your best.

You can do this. Best of luck.

It’s your lucky day.

Wish you a successful start, high school entrance examination!

I wish all candidates in the world can get ideal results and enter their ideal universities.

这些表达都带有鼓励和祝福的意味，适合在高考前对考生说。希望这些表达能帮到你!