他们的商业合作很快演变成了一场复杂的利益纠缠。

Their business partnership quickly turned into a complicated ___entanglement of interests.

耳机线总是莫名其妙就打结了。

The headphone wires always end up in a frustrating ___entanglement.

量子纠缠现象表明，两个粒子即使相隔很远也能保持联系。

Quantum ___entanglement shows that two particles can stay connected even when far apart.