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Ultraviolet light has been used to disinfect hospitals for about 10 years. Scientists are now testing whether this “disinfecting light” can help contain the spread of COVID-19 in public spaces. A team in Ireland has already developed a robot designed to disinfect with ultraviolet light. Plus, learn the English expression “at once.”
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The Expressions are back!
Subscribe to our new podcast, "Essential English Expressions."
Each episode shows you step-by-step how to use a common English expression, with plenty of examples. Season 1 is available now. Download or stream all 14 episodes at [link].