Context: One attempts to undertake a higher-level of learning in a specific intensive study course.
However, this intensive study course erases the foundation previously obtained in prior elementary courses. This is mainly caused by the retardation of a professor, lack of knowing the national language, or both.
We tried to take third-year Spanish, but because our teacher could not speak English or effectively communicate in Spanish, we unlearned the two years of Spanish we had previously taken, leaving us unprepared for the intensive Advanced Placement course that lay ahead.
1) A new Russian word for nightmare. Originates from the Russian name for the Ukrainian mining town of Vuhledar. Russia launched numerous failed attempts to storm the town, resulting in huge scores of Russian soldiers and equipment being brutally destroyed on a daily basis by the defending Ukrainians.