The symposium on AIDS research lasted two days.艾滋病研究的报告会持续了两天.What have you learned from the symposium?你参加了这次科学讨论会,有什么体会?Once I attended an international symposium on Dunhuang studies held at the Mogao Grottoes.我去时,一次敦煌学...
He had been taking part in an international symposium on population.他那时正参加一个有关人口问题的国际研讨会。What have you learned from the symposium?你参加了这次科学讨论会,有什么体会?Once I attended an international symposium on Dunhuang studies held at t...