是in my university 还是at my university 是at university还是in university?...

at university\u548cin a university\u6709\u5565\u533a\u522b\uff1f

\u524d\u8005\u8868\u793a\u5728\u5927\u5b66\u5b66\u4e60
\u540e\u8005\u8868\u793a\u5728\u4e00\u6240\u5927\u5b66\u91cc\uff0c\u53ef\u4ee5\u662f\u6559\u4e66\uff0c\u8bbf\u53cb\uff0c\u5f00\u996d\u5e97\u3002\u3002\u3002

at \u8868\u793a\u5728.......\u4e0a\u73ed/\u5de5\u4f5c\u3002 in \u5728\u5b66\u4e60 \u4ee5\u524d\u7684\u6982\u5ff5\u662f\u8fd9\u6837\uff0c

in my university.

In my university years, I volunteered to teach in rural schools. 

我上大学时，以自愿者的身份前往农村地区教书。

But so many unhappy things made me so tired, so I decided to have a walk along the Yanjiang Road in my university. 

但许多不愉快的事情令我如此疲惫，所以我决定沿着我们校园的燕江路走走。

Then I remembered a bid I myself took serveral months ago . At the time ,I was bidding against 18 other candidates to be chairperson of a debate contest held in my university . 

于是我想起了几个月前我自己参加的一个比赛,当时,我正参加大学里举行的辩论赛,与其他十八名选手角逐冠军的宝座.

两种表达方式都可以。

应该是in my university 英语介词in的范围较大，at的范围较小，如在三班就用at了，at the class 3.时间也是，如in three days， at three o'clock(在3点钟）

用 in my university 哈，这是习惯用法

在我的大学
In my university

扩展阅读：millipore ... in my honor ... captain of industry ... a dance of fire and ice ... in my perspective ... you are welcome ... we are young ... in my younger ... in my feelings ...