keep to

phrasal verb
1
to avoid leaving a path, road, etc.
روی مسیر باقی ماندن, پیروی کردن از راه
synonym stick to something
2
to talk or write only about the subject that you are supposed to talk or write about
متمرکز ماندن روی موضوع, محدود ماندن به موضوع
Nothing is more irritating than people who do not keep to the point.
3
to do what you have promised or agreed to do
پایبند بودن به, وفادار ماندن به, عمل کردن به قول
to keep to an agreement/an undertaking/a plan
4
to stay in and not leave a particular place or position
ماندن در, باقی ماندن در
She's nearly 90 and mostly keeps to her room.