grade

• Of these two primary grades all other grades were varieties .
  其它种种级别都是这两种主要级别的异称。
• The front end is equipped with hydraulic jacks used for grade adjustment .
  前瑞安装有液压千斤顶用来调整坡度。
• My grades reflect the shocking inadequacy of school system .
  我的分数反映了学校制度的不健全已到了惊人的地步。
• Thereafter the bottle is filled to the lip with commercial grade xylene .
  然后，将工业品二甲苯放入瓶中，使达到瓶口。
• The child has skipped to the third grade as he did exceedingly well in his studies .
  这孩子因成绩优异而越级升入三年级。
• I studied night and day and within two weeks i was promoted to the sixth grade .
  我夜以继日地学习，不到两周就跳到六年级了。
• Preserve grading in these areas to protect grass seed mixtures planted in the exposed region .
  保护种植在开阔地的绿化地带。
• I was a new, idealistic teacher when billy entered my fourth grade .
  比利入我教的四年级班时，我还是初出茅庐，满怀理想的老师。
• Greece has been producing refractory grade chromite ore for more than a hundred years .
  希腊生产耐火级铬铁矿石已有百余年历史。
• No doubt many organs exist of which we do not know the transitional grades .
  固然有许多现存的器官，它们的过渡阶段我们并不明了。