"And this is why we are asking the United States to ensure that material assistance and training that is given to security forces in Somalia are accompanied by vetting of personnel and the creation of specific mechanisms to respond to serious abuses when they occur,"
VOA: standard.2009.07.31
One of the big problems with studying human diseases is that you can study how they occur in people but there's only a limited amount that you can learn from people.
在人类疾病研究中的一个难题是,你有能力研究发病原因,但以人类为样本做研究却是备受限制
Well instead of forming droplets like fat they arrange in a very particular way, they form these structures that are called self-assembled structures because they occur naturally, because of properties of the lipids.
它们不是像脂肪一样形成液滴,而会细致地排列起来,它们形成的结构名为,自组装结构,因为它们能够自然生成,这归功于这种脂质的特性
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