to work hard on something for a long period
দীর্ঘ সময় ধরে কঠোর পরিশ্রম করা
"She grinded away at her studies to pass the exam."
"সে পরীক্ষায় পাস করার জন্য দিনরাত পড়াশোনা করেছে।"
a very clever or talented person
to feel mentally or emotionally unstable
to have confidence in your own abilities
a very good and honest person
to include something extra
to be very clear or direct about something