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In the midst of all this movement, the weight and the pen would be still.
在这些所有的运动中，重物和笔却不动。
youdao
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The size and weight of pen are almost like those of normal ball pen.
的大小和重量的笔几乎一样正常圆珠笔的。
youdao
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The size and weight of pen are almost like those of normal ball pen.
的大小和重量的笔几乎一样正常圆珠笔的。
youdao