keep to
US /kiːp tuː/
UK /kiːp tuː/

1.
守る, 従う
to obey a rule or to continue to do something without changing
:
•
You must keep to the speed limit.
制限速度を守らなければならない。
•
Let's keep to the original plan.
元の計画を守りましょう。
守る, 従う
to obey a rule or to continue to do something without changing