请教关于科大的second class honor的问题

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收到科大environmental engineering and management 的 conditional offer, 然后， 上面说需要bachelor's degree with second class honor or equivalent level. 发email问了小米，回答非常鸡肋说：“Please note that upon receipt of your complete transcript, it will be reviewed by the program director
and he will check if you meet the admission condition or not.” 所以想请教下各位，如果按找gpa or average 来算的话，equivalent level 应该是多少？灰常感谢！！！