Obviously, at lower levels (grade 7), teachers will have to use Chinese more frequently to ensure students understand.
显然，在较低年级(七年级)，为了确保学生能够听懂，教师会较频繁地使用汉语。
The conclusion condensed fron this paper will be helpful to the further study of theory about gear error and to keep the accuracy of gear machining stably on grade 7.
本文的结论对进一步深化齿轮误差理论的研究及进一步稳定7级齿轮加工精度是有益的。
What did Peter lose in Grade 7?
彼得在七年级时失去了什么？
I joined the basketball team when I was in Grade 7.
我七年级时加入了篮球队。
欢迎来到七年级一班。
我们在七年级四班。
我就读于七年级三班。
What do you remember about Grade 7?
关于七年级你记得什么？
我在十班，七年级。
我在七年级一班。
我在七年级三班。
我们读七年级。
I'm 12 years old. I'm in Class 2, Grade 7.
我今年十二岁，在七年级二班。
I remember ________ all of you in Grade 7.
我记得在七年级时见过你们所有人。
Unit14 I remember meeting all of you in Grade 7.
我记得在七年级遇到你时的情形。
Kitty: Glad to meet you, Andy. Are you in Grade 7 too?
基蒂：见到你很高兴，安迪。你也在7年级吗？
The Class 1, Grade 7 students took some photos of their pets.
七年级一班的学生拍了一些他们宠物的照片。
I still< 2> ( remember) the first day of Grade 7 like it was yesterday.
我仍然记得七年级的第一天，它好像还在昨天。
I would like to recommend Chen Dan for the Grade 7 Most Helpful Student Award.
我想推荐陈丹获得七年级的最乐于助人学生奖。
I live in Shenzhen, and I am in Grade 7. I have short black hair and black eyes.
我住在深圳，我上七年级。我长着短短的黑头发和黑眼睛。
All the students and teachers from Grade 7, 8 and 9 took part in the sports events.
所有七、八、九年级的老师们和同学们都参加了比赛项目。
The Class 1, Grade 7 students in the English Club are making a display about different festivals around the world.
参加英语俱乐部的七年级一班的学生们正在做一个关于世界各地不同国家的节日的展览。
The Class 1, Grade 7 students in the English Club are making a display about different festivals around the world.
参加英语俱乐部的七年级一班的学生们正在做一个关于世界各地不同国家的节日的展览。
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