那只猫大声地发出呼噜呼噜声。
尽管像狮子一类的大型猫科动物也会发出呼噜般的声音，研究却表明豹亚科动物，比如狮子、老虎、美洲豹、美洲虎、雪豹及云豹，并不能发出真正的呼噜声。
Although some big cats like lions exhibit a purr-like sound, studies show that the Patherinae subfamily: lion, tiger, leopard, jaguar, snow leopard, and clouded leopard do not exhibit true purring.
小猫发出的呼噜声是单音节的，长大后，猫咪能发出两到三种不同音调的呼噜声。
Young cats purr in a monotone, while older ones do so in two to three resonant notes.
木犊在家打呼噜，她己经习惯在呼噜声中蒙头酣睡，如今没了雷打的轰响，她一夜要醒来数回。
Mu Du's snoring had invited her to tuck herself into a deep sleep. Now without his thundering roar, she would wake up several times overnight.
尽管打呼噜声是许多家庭的夜间进行曲，然而，严重的打呼噜习惯并不仅仅是恼人，它会增加出现中风的危险。
The study found that people who slept more than eight hours a night, those who were drowsy during the day and those who snored had a much higher chance of having a stroke.
尽管打呼噜声是许多家庭的夜间进行曲，然而，严重的打呼噜习惯并不仅仅是恼人，它会增加出现中风的危险。
The study found that people who slept more than eight hours a night, those who were drowsy during the day and those who snored had a much higher chance of having a stroke.
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