| 单词 | radical sign |
| 释义 | radical signˈradical ˌsign noun [countable] math a mathematical sign (√) that shows that you must find the square root of the quantity after the sign, or if there is an index (=small raised number) before the sign, it shows which root you must find, for example ³√ means that you must find the cube root because the index is 3 |
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