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In schools, bubbles, sometimes called ‘pods’ have been working successfully for a while. A group of students is allocated a specific teacher, completing all lessons and break times with their fellow bubble students and adults. The idea means that if a pupil falls ill, or tests positive for COVID-19, everyone that has had direct contact with can be identified and quarantined quickly and efficiently. Once a bubble is created pupils do not have contact with pupils in other bubbles. In some schools, brothers and sisters have been kept in the same bubble, but the majority of schools have opted to keep children in respective year groups.

Meaning of bubble in English

bubble
noun
UK /ˈbʌb.əl/ US /ˈbʌb.əl/
bubble noun (AIR BALL)

C1 [ C ]
a ball of gas that appears in a liquid, or a ball formed of air surrounded by liquid that floats in the air:
As water begins to boil, bubbles rise to the surface.
I love champagne - I think it's the bubbles that make it so good.
picture of bubble
ATU Images/Photographer's Choice/GettyImages
More examples
soap bubbles
Emily was blowing bubbles in the garden.
The bubbles from the champagne went up my nose and made me sneeze.
The kids like bubbles in their bath.
She watched as, one by one, the bubbles popped.
SMART Vocabulary: related words and phrases
bubble noun (GOOD PERIOD)

[ C usually singular ]
a temporary period of very successful economic performance in a particular country or sector, often followed by sudden failure:
Japan's economic bubble
the housing bubble
He made millions before the dotcom bubble burst.
SMART Vocabulary: related words and phrases
bubble noun (GROUP)

[ C ]
a situation in which you only experience things that you expect or find easy to deal with, for example opinions you agree with, or people who are similar to you:
The candidate liked to talk to ordinary people to get a fix on what was happening outside his bubble.
On social media we all tend to live in our bubbles, where everyone feels the same way we do.

[ C ]
a group of people who have a lot of contact with each other but limited contact with people outside the group, for example as a way to avoid spreading disease:
The plan was based on the principle of keeping school classes apart in separate bubbles.
UK The government said that people living alone could join up with one other household to create a support bubble.
SMART
https://dictionary.cambridge.org/dictionary/english/bubble

على هذا تكون الترجمة
Indoor or Outdoor play areas, are closed after use by one bubble and sanitised to reopen the next day.
تُغلق مناطق اللعب الداخلية والخارجية بعد اشغالها من مجموعة معزولة واحدة وتُطهر ليتم فتحها في اليوم التالي