Billy: And lightweight, too. It'll play for 20 hours on two AA batteries!

Jennifer: Cool! The sound is great. These earphones are awesome!

Billy: And they're really safe. They'll protect your ear from sound damage.

Jennifer: You certainly need that. You always pump the volume up way too high.

Billy: I know. And you can also hear outside noises while you listen to music.

Jennifer: You're right! So I can listen to music while riding my motorbike!

来源:恒星英语学习网-口语频道
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