(LONGMAN2000) extension | Definition: 伸展
| (IELTS4000) extension | Definition: supplement; act of extending or the condition of being extended
| (SAT5000) extension | Definition: A reaching or stretching out, as in space, time or scope.
| (NGSL) extension | Definition: extra time allowed to complete something
| | (ESS4000) extension | Definition: An extension is a part added to something to give it more time or space. | Example: →My parents decided to add an extension to our house for the new baby.
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