英語「grade」の意味・使い方・読み方 | Weblio英和辞書 grade (third-person singular simple present grades, present participle grading, simple past and past participle graded) (chiefly Canada, US) To assign scores to the components of an academic test, or to overall academic performance
英語「highgrade」の意味・読み方・表現 | Weblio英和辞書 形容詞 high-grade (comparative higher-grade, superlative highest-grade) Of high quality, particularly good The high-grade ore was much more profitable than lower-grade ore