拉尔森坚持认为，固化对于环境或人类健康鲜有风险，因为它依赖的是沼泽和湿地中自然存在的无害微生物。
Solidification, Larsson maintains, would pose few risks to the environment or human health, since it relies on harmless microbes naturally present in marshes and wetlands.
健康者服用了可以致痒的组胺溶液，其他人则服用了无害的盐水。
The healthy subjects had a histamine solution, which was designed to make them itch.Others had a harmless salt solution applied.
健康者服用了可以致痒的组胺溶液，其他人则服用了无害的盐水。
The healthy subjects had a histamine solution, which was designed to make them itch. Others had a harmless salt solution applied.
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