入秋，天气转凉，草叶渐渐枯落，人心中常会因此产生忧郁、烦躁等情绪变化。这是因为在人的大脑底部，有一个叫松果体的腺体，能分泌一种“褪黑激素”，这种激素能诱人入睡，使人意志消沉，抑郁不乐。充足的阳光能抑制褪黑激素的分泌。但入秋之后，光照时间减少，特别是碰到阴雨连绵时，松果体分泌褪黑激素相对增多，甲状腺素、肾上腺素的分泌就会受到抑制，人体细胞就会“怠工而偷懒”，人的情绪也就低沉消极，引起“情绪疲软”。
经济逻辑及市场情绪表明了欧元的更进一步疲软。
Economic logic as well as market sentiment points to further euro weakness.
至关重要的是，英特尔财报减轻了外界对今年下半年个人电脑业务疲软的担忧情绪。
More importantly, Intel's results allayed concerns that the personal computer business would struggle during the second half of the year.
来自20国集团官员的疲软意见和分歧意见未能减轻令人担忧的看跌情绪。
The weak comments and divergent comments from G20 officials failed to ease the worrying entrench in bearish sentiment.
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