所以跟一些喜欢日光浴的懒汉比起来， 它们可辛勤地多，在海水表层和底层之间 在不同温度之间来回地舞蹈着。
So rather than just being some sunbathing slacker, they're really very industrious fish, that dance this wild dance between the surface and the bottom and through temperature.
我迈着沉重的脚步地来回走着，仿佛我对这些警察的调查感到很愤怒，但这种声音仍然持续地增强。
I paced the floor to and fro with heavy strides, as if excited to fury by the observations of the men — but the noise steadily increased.
的确，许多人很惊讶自己能准确地聆听随便一条讯息是多么地容易，甚至他们能将注意力在两者中来回改变。
Indeed many were surprised how easily and accurately they could tune in to either one of the messages, and even shift their attention back and forth between the two.
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