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

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/01 14:58:43
x)KMU()WM,I-L)V(HU(/KQ--.Q()J,K嗦g(+&&g(d)&#2&H6/oyھɎ%ϗ>;ٴg<|7֗ w?buOvyyӎ /{t'PNjl 116-|6Ɏ';MkF 1o뚿d