calcium
to transform
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calcification
to calcify, calcify, calcified
这 块 骨头 出现 了 钙化 现象。
This bone shows signs of calcification.
X 光 显示 他 的 关节 有 钙化。
The X-ray shows calcification in his joints.
钙化 是 人体 自然 的 老化 过程。
Calcification is a natural aging process in the human body.