The tentacles of an animal such as an octopus are the long thin parts that are used for feeling and holding things, for getting food, and for moving.
N-COUNT
(政治、商业、社会等机构的)影响力，触角
If you talk about the tentacles of a political, commercial, or social organization, you are referring to the power and influence that it has in the outside community.
例句
Free speech is being gradually eroded year after year by new tentacles of government control.言论自由正在一年又一年逐渐被政府不断施加的影响力所削弱。