🗣 스픽 🗣 📝 Recently, I attended a study session on the efficiency and cost-effectiveness of kindergartens. 그리고 'efficient, especially how cost-efficient' 부분을 'efficiency and cost-effectiveness'로 바꾸면 더 간결하고 명확한 표현이 됩니다. 'Got it! So, you attended a study session that focused on the efficiency, particularly the cost-efficiency, of the kindergarten. Is that correct? 📝 No, thanks. Now, the next sentenc..