name two materials the sound must travel through to reach her ears.1.___________2.___________

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nametwomaterialsthesoundmusttravelthroughtoreachherears.1.___________2.___________nametwomaterialsth

name two materials the sound must travel through to reach her ears.1.___________2.___________
name two materials the sound must travel through to reach her ears.1.___________2.___________

name two materials the sound must travel through to reach her ears.1.___________2.___________
说出两种,声音必须经过它们,才能到达她的耳朵的材料的名称.
我不是问你有没有上下文了么.
如果宽泛的说,只有一种air 空气.
因为一般声音,直接通过空气就传到了.
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