今天我们要学的词是 proportion. Proportion 有部分的意思。A report from the Centers for Disease Control and Prevention found that only a small proportion of American adults, less than 15%, eat enough fruits and vegetables. 美国疾病控制中心的报告发现，美国成年人里只有一小部分，不到15%的人，每天摄取足够的蔬菜和水果。英国据信至少有700人前往中东，参加恐怖组织伊斯兰国的行动。A large proportion of them have returned to the UK, where they are considered a threat. 其中很大一部分人已经返回英国，被认为是安全隐患。好的，今天我们学习的词是 proportion, proportion, proportion...