人情之常 meaning in Chinese

a constant occurrence in human relationship favour

Giving presents at christmas is an institute
在圣诞节送礼物是一项人情之常。
But he was very sure of which way to go - the judgement should be made strictly on the ground of evidence and the point of law . with this principle in mind , he found godber guilty
如果说，判案时完全不受舆论压力影响就是骗人的，因为人情之常，外面舆论方面有这么大的力量，自己在中间一定会受影响，故此我要警惕自己。