单语范例（未经PONS编辑处理）
A major breakthrough was achieved with the discovery of the first well-tolerated orally available agents.
en.wikipedia.org He organized a counter-intelligence group using locally-recruited agents.
en.wikipedia.org This can be achieved only by toxic agents, although the drinking of them is to a certain extent deleterious to our nature.
en.wikipedia.org Comparative analysis of the roles of both is conducted to assess the plausibility of how agents explain the scenarios of their interactions.
en.wikipedia.org Many programs out there today offer some level of personalized service and expertise comparable to the ones that most agents deliver.
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