When teachers assign homework, students usually feel an obligation to do it.
当老师布置家庭作业的时候，学生们通常觉得做作业是分内之事。
It's her duty to look after her aunt.
照顾她姨妈是她分内的事.
It's sth. within my duty.
这是我分内的事.
I would be glad to get rid of them myself. But that is not our concern.
如果能亲自动手摆脱他们我会非常高兴，但那不是我们的分内之事。
The army apparently refused point blank to do what was required of them.
军队貌似断然拒绝做他们分内的事情。
He did not think it the job of officials to ventilate their doubts or daydreams.
他认为公开提出自己的疑问或不切实际的想法并非官员们的分内之事。
It is part of your duties to proof - read.
校对是你的分内之事.
You'd better stick to your last.
你最好还是做自己分内的事.
The matter is outside my province , ie I cannot or need not deal with it.
那不是我分内之事.
Some members of this class haven't been pulling their weight.
班里的一些人未努力做好他们自己分内的活儿.
We shall succeed in this business only is everyone pulls his weight.
只有大家努力做好自己分内的工作,我们的事业才会成功.
We are just trying to do our bit for the world.
我们正试图为这个世界做自己分内的事.
She makes a religion of keeping her home clean and tidy.
她认为保持房子整洁是她分内的事.
Do your own thing and everything will settle down.
做好你分内的事,事情终将解决.
The preparation of the meals is your job.
做饭是你分内之事.