Tears help to protect the eye from potentially harmful foreign bodies.

眼泪有助于保护眼睛去除可能有害的异物。

《牛津词典》

Foreign bodies or trauma to the eye can also cause problems.

外伤或异物对眼睛也会造成问题。

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Foreign bodies or trauma to the eye can also cause problems.

外伤或异物对眼睛也会造成问题。

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