16. There is a growing worldwide awareness of the need for strengthened environmental protection .
世界上越来越多的人认识到加强环境保护的必要性。
17. There has been a dramatic increase in the spread of HIV/AIDS in recent years , with a new study projecting that the dreaded disease will affect over 30 million people worldwide by the year 2005 .
近年来，艾滋病蔓延的幅度进一步扩大，一项新的研究预测，到2005年，世界上有超过三千万人将感染这一可怕的疾病。
18. Working with the disabled cannot help but leave one impressed with their indefatigable desire .
与残疾人一起工作使一个人不得不对他们坚持不懈的渴望印象深刻。