30年前，当五个在洛杉矶的年轻男同性恋者被一种疾病击垮时，一场逼近的世界性灾难渐露迹象，而这种疾病正是闻名的艾滋病（获得性免疫缺陷综合征）。
Thirty years ago, the world got its first inkling of impending catastrophe when five young gay men in Los Angeles were struck down by the illness that became known as HIV/AIDS.
事实上，在研究人员观察的16种免疫缺陷病毒中，除五种以外，其他十一种都具有各自的nef基因以去除细胞表面的TCR-CD3蛋白。
Indeed, of the 16 immunodeficiency viruses the researchers looked at, all but five had nef genes that removed TCR-CD3 from the cell surface.
本文根据传统的直角坐标数控雕刻机的缺陷，结合工业机器人的运动学特性，研制了一种五自由度关节式雕刻机器人。
By analyzing the disadvantage of the traditional NC engraving machine based on orthogonal coordinates and the kinematics characteristic of industry robot, a robot with five knuckle arms is designed.
运用“五种社会形态理论”模式分析侗族传统社会形态，使侗学研究具有较大的缺陷。
There are many limitations in studying the Dong nationality, when we analyze the traditional society pattern of the Dong people using the "The Theory of Five Social Patterns" .
第五部分股利支付形式本部分主要对常见的五种股利支付形式，从概念、优点、缺陷等方面进行了分析、研究。
This part primarily analyses the concepts, advantages and disadvantages of five common providing forms of dividend on shares.
实验结果表明：这五种阔叶树材干燥特性差异显著，其中椆木干燥缺陷严重，干燥速度缓慢；
The results of the experiment showed that the differences among the five species are obvious. The drying defects of Lithocarpus glaber were serious and its drying rate was slow;
实验结果表明：这五种阔叶树材干燥特性差异显著，其中椆木干燥缺陷严重，干燥速度缓慢；
The results of the experiment showed that the differences among the five species are obvious. The drying defects of Lithocarpus glaber were serious and its drying rate was slow;
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