4周搞定2000+托福核心词
biodegradable = bio(生物) + de(向下) + grad(级别) + able(能…的) = 生物上可以向下降级的→可生物降解的
degradation = de(向下) + grad(级别) + ation(表结果) = 向下降级→退化
ing = ing(表名词) = 养蜂业
being = be(使…成为) + ing(表名词) = 生命
级别→分级
grading
常考释义
n. 分等；分级；分类
If a professional grading system existed, executives would never settle for a D in their careers.
如果有专业的分级制度，经理人们永远不会希望在职业生涯中获得D。
n. 等级；级别
All the responses were given a grading.
所有回复都评了等级。
n. 评分；评级【教育】
Our teacher is known for her fairness in grading pupils.
我们的老师以给学生评分公平著称。
[ˈɡreɪdɪŋ]
基本释义 n. 分阶段
常考释义 n. 分阶段
All the responses were given a grading.
所有回复都评了等级。
graduated
graduate
gradable
gradient
graduation
gradational
graded
biodegradable adj. 可生物降解的
bio生命+de向下+grad级别+able可以… =生物上可以向下降级的→可生物降解的
degradation n. 退化
de向下+grade级别+ation结果 =向下降级→退化
gradation n. 渐变
grad级别+ation过程 =每个级别的过程=渐变
beekeeping n. 养蜂业
bee蜜蜂+keep保留+ing表名词，行业 =养蜂业
being n. 生命
be使...成为+ing名词 =生命
dwelling n. 住所
dwell居住+ing名词 =居住名词化，住所
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