他们未能赢得所必须的2/3多数票.They failed to win the requisite twothirds majority.到山区去穿暖和的衣服是必须的.Warm clothes are a must in the mountains.他做工作缺乏成功所必须的信心.He won't go at a job with the confidence necessary for success....
桑椹红色素是一种很好的天然自由基清除剂.Mulberry red pigment hence was a good kind of natural radical scavenger.天然萝卜红色素的抗氧化能力与同浓度的BHT相近, 0.01%的添加量即可达到93%以上的抑制率.The inhibition ratio, could be achieved more than 93 % by the 0.01 % pigment add...