And if you ever hunted frogs in your childhood, you know how softly you had to tread! Moreover, it seems absurd that birds should sing and frogs croak, if they could not even hear their own voices.

• 如果你在童年抓过青蛙，你应该知道要多么轻柔地走动。说实话，青蛙在叫，鸟儿在唱，如果它们甚至听不到自己发出的声音，岂不荒谬。