infiltrate
verb [ I + adv/prep, T ] uk/ˈɪn.fɪl.treɪt/ us/ˈɪn.fɪl.treɪt/
（使）潜入；（使）渗透
to secretly become part of a group in order to get information or to influence the way that group thinks or behaves
A journalist managed to infiltrate the powerful drug cartel. 一位记者设法打入了势力强大的贩毒集团内部。
渗透（入某物质、地方、系统或机构）
to move slowly into a substance, place, system, or organization
At about this time the new ideas about "corporate management" had begun to infiltrate (into) local government. 大约此时，有关“共同管理”的一些新思想逐步开始为当地政府所接受。