He had been taking part in an international symposium on population.
他那时在参加一个有关人口的国际研讨会。
E. g. 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。
Do connect the Linkmen if you have any question during this International Symposium!
本次研讨会期间如有任何疑问，请联系会务联系人！
A major event was the International Symposium on Intellectual Property and Information Technology 1999.
年内举行的一项盛事，是1999年知识产权与资讯科技国际研讨会。
A major event was the International Symposium on Intellectual Property and Information Technology 1999.
年内举行的一项盛事，是1999年知识产权与资讯科技国际研讨会。
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