诺亚听着蟋蟀的叫声还有叶子沙沙响的声音，想着自然的声音更真实也比汽车和飞机的声音更能唤醒人的情感。

Noah listened to the crickets and the rustling leaves, thinking that the sound of nature was more real and aroused more emotion than things like cars and planes.

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睡到自然醒。 不要让闹钟或狗叫声打扰你的睡眠周期。

Try to awaken naturally,without the help of an alarm clock or barking dog that can disrupt your dream cycle.

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McCom认为猫可能利用了人类对婴儿哺育的自然生理反射，因为之前的研究显示猫的叫声与婴儿的哭声相似。

McComb suggests that cats may be cashing in on human's naturally nurturing response to a baby’s cry. Previous studies have shown the cat’s embedded cry shares a similar frequency.

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