你们在不同的年级吗？
They are in the same school, but in different grades.
他们在同一所学校，但在不同的年级。
No difference was found among different grades.
各年级患病率差异无显著性。
The material used is Spring Steel of different grades.
所用的材料是不同等级弹簧钢。
Company product range, fashionable, different grades.
公司产品种类齐全，款式新颖，档次各异。
Our factory can produce different grades of kitchen cabinet products.
我们的工厂能生产不同款式的橱柜产品。
There was significant difference in mood state among students of different grades;
不同年级高中生的情绪状态有显著差异；
There was significant difference in mood state among students of different grades;
不同年级高中生的情绪状态有显著差异；
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