And it can lead to headaches and blurred vision. "You're taking that normal relationship which has been coupled in the brain for years.

VOA: standard.2010.02.21

What might lead to a commitment, ? a decision to make a commitment to make the relationship last?

为什么作出承诺，决定承诺维持双方的关系？

耶鲁公开课 - 心理学导论课程节选

Det Sgt Chloe Webber said there were "many factors at this time" which may lead to a relationship becoming abusive.

BBC: Police in Valentine's Day domestic abuse warning

Analysts have been predicting that Mayer's old ties with Google might eventually lead to a closer relationship with Yahoo.

NPR: Yahoo Taps Into Google's Ad Network, Expertise

It's time to forge a practical, productive relationship that will lead to normalization of diplomatic relations between the U.S. and Venezuela.

CNN: Seize this moment to forge ties with Venezuela