另一部分不希望让自己暴露在难堪之下，或者，破坏这次试验。参与者被告知要让对话各方对别人保持匿名。

Another part of them didn't want to expose themselves to embarrassment or to ruin the experiment which, they had been told depended on each conversant remaining anonymous from the others.

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方法：采用沉降法破坏供试液的胶体并去除其不溶性颗粒，以目标菌进行回收率验证试验。

Methods: Usded sedimentation, undermined the colloidal system of sample solution, removal of the insoluble particles, and verified the recovery of the target bacteria.

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