Andrew Maynard is chief scientist for the Project on Emerging Nanotechnologies at the Woodrow Wilson Center. He noted that Brazil, India, China and South Africa are currently doing nanotechnology research that could help poor countries. But he also noted that there is some risk in using nano-materials. He says nanometer-sized particles behave differently in the body and the environment compared to larger particles.7 Experts say more investment in research is needed to better understand these risks.
词汇:
nanotechnology n. 纳米技术
matter n. 物质
molecule n. 分子
atom n. 原子
nanometer n. 纳米,毫微米
one-billion n. 十亿分之一
dirt-resistant adj. 防尘的,防污的
promise n. 有希望,有前途
program n. 节目,节目单 vt. 为编制程序
scholar n. 学者
quantum n. 量;量子
dot n. (小)点,圆点
confirm vt. 确认;证实
case n. 病症;病例;患者
malaria n. 疟(疾)
misuse vt. 误用,滥用 /mis jus/ n. 误用,滥用
particle n. 颗粒,微粒;粒子
activate vt. 使激活
identify vt. 辨认
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