19世纪末，狗舌草被偶然引入新西兰，像许多入侵的外来物种一样，它很快就变成了一种有害生物。

Ragwort was accidentally introduced to New Zealand in the late nineteenth century and, like so many invading foreign species, quickly became a pest.

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但是卢偶然间发现了一种口腔细菌产生的酶可以破坏生物膜。

But Lu stumbled across an enzyme produced by oral bacteria that can break up biofilms.

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李女士说创造这种新型材料的想法来自几年前它和一位生物学家的偶然相遇。

Miss Lee said the idea to create the fabric came to her after a chance meeting with a biologist several years ago.

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