While the simple presence of these chemicals does not necessarily indicate a health risk, the fact that typical Americans carry these chemicals at all shocked June and his fellow participants.

虽然这些化学物质的简单存在并不一定表明存在健康风险，但典型的美国人身上携带这些化学物质的事实让琼和他的同事感到震惊。

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And while the simple presence of these chemicals does not necessarily indicate a health risk, the fact that typical Americans carry these chemicals at all shocked June and his fellow participants.

虽然这些化学物质的简单存在并不一定表明存在健康风险，但典型的美国人身上携带这些化学物质的事实让琼和他的同事感到震惊。

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This is a fairly simple example, and many of the participants provide only one service that has only one capability.

这是一个十分简单的例子，其中有多个参与者只会提供一种服务，并且只有一种功能。

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The problem with government economic intervention is simple: while participants in the marketplace are imperfect and make mistakes, the marketplace involves people and institutions from across the nation and even world.

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Our asset class forecast relies on the simple belief that market participants, as a group, will invest in risky asset classes when the return expectation is high enough.

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Participants were also more confident about following a simple recipe.

BBC: Cooking classes 'a boost to healthy diet'