29:29Learning
'must have', 'might have', 'should have' & 'can't have' to talk about the past: Live English Class
BBC Learning English
In an effort to make the Harvard Science Center’s Astronomy Lab accessible to all students – including those with visual impairments – Allyson Bieryla and colleagues have developed a device, which can be mounted to a telescope, that translates the light from distant astronomical objects into sound.
Published 2019-08-16 · Watch on YouTube ↗
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29:29BBC Learning English
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26:06The Royal Institution
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