在您研究和使用这些工具时，请与更广泛的社区分享它们，以使每个人都能增长知识。

As you explore and use the tools, share them with the broader community so everyone grows in knowledge.

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最近的研究表示：美国境内广泛使用的除草剂草甘膦将不会再那么管用了。

Recent research also suggests that weeds might get harder to kill with glyphosate, the most widely used plant killer in the United States.

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这是令人共同担忧的问题，但研究发现，大多数的广泛使用的补充剂含有很少或根本没有汞、二恶英和多氯联苯的物质。

The concern is a common one, but studies have found that most of the widely available supplements contain little or no mercury, dioxins or PCBs.

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