时差N小时 蓝鲸是天生的歌唱家(上)

Did you know that blue whales sing their songs exactly on pitch, with unbelievable accuracy? Scientists at San Francisco State University analyzed¹ over 4,000 blue whale songs off the coast of California. They found that all the whales produced a certain call type at exactly the same pitch — 16.02 Hertz. That’s about four octaves below middle C. Even more remarkable² than the fact that all the whales sing certain notes at the same pitch, is how perfectly³ on pitch they always are. From note to note the whales only vary in pitch by half a percent difference. By comparison, the difference between C and C-sharp is six percent.

你知道吗？蓝鲸唱歌时音高十分准确。旧金山大学的科学家们分析了加利福尼亚海岸线附近的4000个蓝鲸的发声音频。他们发现蓝鲸能以相同的音高(16.02赫兹)发出某种特定声音。那正是C调下的八度音阶。更值得注意的事实是所有的蓝鲸都能用相同的音高唱歌，它们的音高总是完全相同。蓝鲸通过改变百分之一的音高来改变音符。对比显示，C调和C升调相差百分之六。

1 analyzed   

v.分析( analyze的过去式和过去分词 )；分解；解释；对…进行心理分析

参考例句：

• The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
• The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程，因为对他来说，爱是个不可分析的迷。 来自《简明英汉词典》

2 remarkable   

adj.显著的，异常的，非凡的，值得注意的

参考例句：

• She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
• These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。

3 perfectly   

adv.完美地，无可非议地，彻底地

参考例句：

• The witnesses were each perfectly certain of what they said.证人们个个对自己所说的话十分肯定。
• Everything that we're doing is all perfectly above board.我们做的每件事情都是光明正大的。