Mr. Jones is a renowned international authority on the problem of overpopulation in developing countries.
瓊斯先生在發展中國家人口過剩問題方面是聲譽卓著的國際權威。
A hui may be a wedding, burial or conference. The happier events are marked with speeches, singing and dancing.
一個"會"可能是一次婚禮、葬禮或者會議。而較為喜慶的活動,人們要發表演說,唱歌跳舞以示慶賀。