grading造句

I can call my grade school classmate , jean , and ask her if she would like to be your partner .
我可以打电话给我的小学同学，琴，问她是否愿当你的舞伴。
Smith (1962) considered three alternate methods to determine an equivalent diameter of graded sediment .
史密斯（1962）提出了三种不同方法以计算不均匀沙的当量直径。
As i remember it, i was far too busy than to take the time to thank general marshall for advancement to the grade .
就我的记忆所及，当时的忙碌几乎使我无暇向马歇尔将军致谢。
It's difficult to find grading in a sentence. 用grading造句挺难的

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