This steady and undissipated attention to one object, is a sure mark of a superior genius; as hurry, bustle, and agitation, are the never-failing symptoms of a weak and frivolous mind.
的确，全神贯注专心致志是天才的象征；相反 仓促、匆忙和骄躁，就是一个轻浮愚蠢的大脑的典型表现。
Symptoms of eyestrain include sore eyes and difficulty focusing, poor night vision, difficulty in focusing after concentrating on an object, headaches and sore, red inflamed and weeping eyes.
眼睛疲劳的症状包括如下：眼睛疼痛，难于集中，夜视非常差，在注视一个物体后重新集中视线很困难，头痛，眼睛发红、疼痛、感染、流泪。
Symptoms What does signal bad nerves is avoidance of a non threatening human or object or inappropriate aggression.
各类症状恶劣神经型的标志：对于无威胁的人或对象的逃避，或不适当的攻击。
应用推荐