这些沉积物的形成环境现在还没有被完全弄清楚，科学家们不确定它们之间是否有差异。

Also, because the environment during which the deposits formed is not well understood, scientists are not sure how diverse they will be.

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研究人员声称，这是由于补钙使血液中的钙含量增加，从而加速动脉中沉积物的形成，导致心脏病。

They said that because calcium supplements raise blood calcium levels, this possibly accelerates the formation of deposits in the arteries that could lead to heart attack.

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牙菌斑的沉积物在牙齿和牙龈间形成。

Deposits of plaque build up between the tooth and the gum.

《柯林斯英汉双解大词典》