在购买新耳机之前，请确保它与你的手机兼容。

Make sure the new headphones have ___compatibility with your phone before buying.

他们的性格很合得来，所以相处得很愉快。

Their strong ___compatibility in personalities makes them get along very well.

这种药物与酒精的相容性很差，混合使用会有危险。

This medicine has poor ___compatibility with alcohol, and mixing them can be dangerous.