out of habit

基本解释

'It's really more out of habit than for sentimental reasons,' she says.
萧说，这真的更多的是出于习惯，而不是感情上的原因。
It can be a difficult trap to fall into, just out of habit, but we are all individuals — for better or for worse.
有时候当我们看到别人在这么做的时候，就会忍不住跟着效仿起来——习惯嘛。但好歹每个人也都是单独的个体，所以跳出这种习惯吧。
Psychologists have recently handed the keys to happiness to the public, but many people cling to gloomy ways out of habit, experts say.
心理学家最近已经把开启幸福的钥匙交给了大众，但是一些专家说：许多人摆脱不了习惯，执扭于抑郁的生活方式。

Right, so the things we want you to take away from this are, get into the habit of using pseudo code when you sit down to start a problem, write out what are the steps.
好，这儿我想大家明白的就是,养成解决问题时先写伪代码的好习惯,把步骤都写出来,我想要告诉你们的是一个好的程序员。
麻省理工公开课 - 计算机科学及编程导论课程节选

In a way that doesn't hurt anyone or cause any natural disasters, she added, out of habit.
NPR: Excerpt: 'Criss Cross'
On average the subjects in the study checked their phones 34 times a day primarily out of habit or compulsion, and rarely out of need.
FORBES: How Smartphone Habits Undermine Leadership
Out of habit, you nod and mutter that you understand.
FORBES: 8 Ways To Rebound From A Demotion