我们也知道，一种广泛使用的治疗青春痘的药物阿克唐丸(异维甲酸)一直与抑郁加重有关，虽然相关原因还未确定。
We also know that a widely used drug that treats acne, Accutane (isotretinoin), has been associated with an increase in depression, although no causal link has been established.
这两种研究观点的争论还没有最终的结果，这意味着，吃油炸鱼和增加患中风的几率是否存在因果关系尚未确定。
Both studies are not trials, which means that a causal relationship between eating Fried fish and increased risk of stroke has not been established.
干细胞是一种尚未确定成熟为何种细胞的细胞。
Stem cells are cells that have not yet decided what they want to be when they grow up.
导致自闭症的主要原因尚未确定，研究发现自闭症病例与100种基因变异有关，其中一些可以遗传，一些则是自然发生。
The overarching cause of autism is still unknown, and cases have been linked to about 100 mutations, some inherited and some developing spontaneously.
作为文学作品的内在结构，它具有一种多层次性、未确定性审美特征。
As the intrinsic frame of literature works it has the taste characters like multilayer and uncertainty.
尚有34种寄主未确定的害虫，还需进一步观察和研究。
There are still 34 species of host undetermined pests needing further observation and study.
指对某一操作系统而言是未确定的或不知道的。例如，某条“未定义记录”就是一种未确定或不知道长度的记录。
Not specified or not known to an operating system. for example, an "undefined record" is a record of unspecified or unknown length.
例如，某条“未定义记录”就是一种未确定或不知道长度的记录。
For example, an "undefined record" is a record of unspecified or unknown length.
例如，某条“未定义记录”就是一种未确定或不知道长度的记录。
For example, an "undefined record" is a record of unspecified or unknown length.
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