拓扑元素的命名与辨别是特征技术中存在的一个困难和待解决的问题。
The problem of naming and identifying topological entities becomes a serious problem with feature technology.
这表明大脑中的某些物质与辨别愤怒的情绪有关联，特别是容易发怒的人。
This suggests that something in the brain is attuned to picking out angry expressions, and that it is especially concerned about angry men.
我们可以根据物质的特性把一种物质与另一种物质辨别开来。
We can distinguish one kind of substance from another by its properties.
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