| query | A b___________ is an important development or achievement .A breakthrough is an important development or achievement . The company looks poised to make a significant breakthrough in China. The breakthrough came hours before a U.N. deadline. |
|---|---|
| word | breakthrough |
| full-definition | noun A breakthrough is an important development or achievement . The company looks poised to make a significant breakthrough in China. The breakthrough came hours before a U.N. deadline. |
| inflections | breakthroughs |
| cefr-level | C1 |
Tags: oxford5k::cefr-level:c1
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