He found that the length of time it takes a sound's echo to decay is determined by the absorption of the sound's original energy by surrounding material.

他发现，声音回声衰减的时间长短取决于周围物质对声音原始能量的吸收。

youdao

You will see the following cell level naming binding echo — but this time, it is a CORBA type.

您将看到下面的单元级名称绑定回显，但这一次，它是corba类型的。

youdao

The further off this solid obstruction, the longer time will elapse for the return of the echo.

固体障碍物越远，回声返回所用时间就越长。

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Black churchgoers, of course, often do the same thing at Sunday-morning services, and I suspect that the amenlike responses of black theatergoers are a not-so-distant echo of that old-time religion.

WSJ: Theatergoers: Can I Get an Amen? | Sightings by Terry Teachout

First-time buyers are circling east LA neighbourhoods like Boyle Heights, Echo Park and the unincorporated parts of East Los Angeles, according to Smith.

BBC: Living in: Los Angeles