He screwed the paper into a ball and tossed it into the fire.
他把那片纸揉成一团扔进了火里。
Whose little ball of paper is this!
这是谁的纸团？
He crumpled the paper into a ball.
他把那张纸揉成一团。
Roll it into a ball and place on a baking paper lined cookie sheet.
把它们做成球状，然后放到烘烤纸上。
Why not? Need some stationery. I run out of some paper and ball pens.
我想买一些文具用品，我的纸盒圆珠笔都没了。
Before the party, your friends and family make a big paper ball.
在生日宴会前，你的朋友们和家里人做一个大纸球。
This paper introduces the principle, characteristic and use of Kinematic Ball Bar System.
本文介绍机动球杆系统的基本原理、特点和用途。
The paper deals with application of Compter in ball technology design.
本文研究了计算机在磨球铸造工艺设计中的应用。
The shortcomings of the ball mill with the slide bearings are analyzed in this paper.
分析了球磨机使用滑动轴承的弊端。
The project background of the researching metal ball-valve was introduced in this paper.
通过对金属座球阀项目背景进行介绍，阐述了进行项目研制开发的意义。
This paper stated the application of rubber lining on ball mill in lowering noise.
本文论述了球磨机橡胶衬里在降低噪声中的应用。
This paper stated the application of rubber lining on ball mill in lowering noise.
本文论述了球磨机橡胶衬里在降低噪声中的应用。
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