Mr. Jones is a renowned international authority on the problem of overpopulation in developing countries.
琼斯先生在发展中国家人口过剩问题方面是声誉卓著的国际权威。
Mathilde! Oh yes. Sorry, I didn't recognize you. Where have you been all these years, Mathilde? I hope you weren't ill. You don't look very well.
玛蒂尔德!真的是你呀!对不起,我没有认出你来。这些年你上哪儿去了,玛蒂尔德?我想你没有病吧,你的脸色看来不太好。