他在大学里选择了计算机科学作为主修专业。

He chose to study ___CS as his major in university.

如果你有任何问题，请联系我们的客服部门。

If you have any questions, please contact our ___CS team.

我们经常在晚上一起玩反恐精英放松。

We often relax by playing ___CS together in the evenings.