各代表团成员之间也进行了频繁的交叉接触。
Members of the delegations also conducted frequent cross-conversations.
全面、详细记录清洁及检查程序，以防止过敏源交叉接触或产生遗留物。
Extensive, well-documented cleaning and inspection procedures to prevent allergen cross-contact or carryover.
H1N1病毒的家族谱系能够解释，为什么注射过1976年疫苗或者接触过较早人类流感病毒会对新病毒起到交叉预防作用。
The genealogy of the H1N1 virus family would explain why exposure to a swine lineage via the 1976 vaccine or to older human lineages offers cross-protection against the new strain.
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