千丝万缕的英文：
[Literal Meaning]
thousand/thread/ten thousand/string
tens of thousands of threads

[解释]
千条丝，万条线。形容两者之间密切、复杂的联系。

[Explanation]
countless ties

[例子]
这两家公司有着千丝万缕的联系，所以一家倒闭了另一家也会遭殃。

[Example]
The two companies have all kinds of connections, so if one collapses, the other won't survive.

[英文等价词]
linked in countless ways

Maintain manifold links with...
和...有千丝万缕的关系

These two things have a thousand and one links.
两件事情之间有着千丝万缕的联系。

They were inextricably tied up with feudal forces.
他们和封建势力有千丝万缕的联系。