When not removed, plaque causes tooth decay and gum disease.

牙斑没有清除就会导致蛀牙和牙龈疾病。

《柯林斯英汉双解大词典》

Occasionally, a bubble is not removed during refining, a sand grain refuses to melt, a tremor in the tin puts ripples into the glass ribbon.

"有时候，在提炼的过程中会出现这些情况：一个气泡没有被移除，一个砂粒没有熔化，（熔融的）锡的一次颤动把波纹带进了玻璃带中。

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If plaque is not removed, it builds up and gets under the gum line.

如果不清除牙菌斑，它就会堆积起来并钻到牙龈下面。

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He could not speak. Soldiers removed their hats and watched silently as Lee rode past.

VOA: special.2009.12.24

Also, moral impurity is not removed or reducible through rituals, through washings and launderings, ritual ablutions and the like.

此外，道德不洁不能通过仪式来去除或减少，类似于洗、烫、沐浴仪式等等都不行。

耶鲁公开课 - 旧约导论课程节选

Among individuals who did not receive a message, about five percent later removed the information.

VOA: special.2009.02.03

This tax was not removed by Christie, but sunset as was planned without him extending it.

FORBES: The Two Chris Christies

It is likely that the use of Tredaptive will be curtailed, if not removed from the market entirely.

FORBES: Will Merck's Failure With Tredaptive Impact How Drugs Are Approved in Europe?

Reed warns that if space junk is not removed it could mean that low-earth orbit might eventually become unusable.

CNN: Space harpoon plan to nail orbital garbage