问题描述：
解释英语句子并填空
求几个句子的翻译和回答,
Titanium does not absorb water.It is________.
An eraser has weight and definite ________ and ________.
求几个句子的翻译和回答,
Titanium does not absorb water.It is________.
An eraser has weight and definite ________ and ________.
问题解答：
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