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来源:雅诚德英语网
This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
海洋中即使是相对微弱的声音,尤其是低频声音,也能传播数千英里的主要原因就是这种聚焦。
This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
海洋中即使是相对微弱的声音,尤其是低频声音,也能传播数千英里的主要原因就是这种聚焦。