赫克特特别注意追踪特定的一种多环芳烃——菲，因为菲存在于香烟烟雾中。

One specific type that Hecht was particularly interested in tracking was phenanthrene, which is in cigarette smoke.

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该报告的另一位作者罗伯特.赫克特说：“我们认为捐赠者必须坚持下去，因为接下来的五年会十分关键。”

“We would argue that the donors really need to stay with this, and the next five years are absolutely critical, ” said Robert Hecht, another of the report’s authors.

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该报告的另一位作者罗伯特.赫克特说：“我们认为捐赠者必须坚持下去，因为接下来的五年会十分关键。”

“We would argue that the donors really need to stay with this, and the next five years are absolutely critical,” said Robert Hecht, another of the report’s authors.

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