Orthogonal projection : লম্ব-অভিক্ষেপ;
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Appropriate Prepositions
Add to (বৃদ্ধি করা, যোগ করা): The doll-dance in the exhibition added to our pleasure.
Appointment with (সাক্ষাতের সময়): He has an appointment with the minister at 10:00 am.
Indulge in (প্রশ্রয় দেওয়া): You should not indulge in idleness.
Inquire of, about, into, after (অনুসন্ধান করা): Roma inquired of me about my father’s health. The pope will inquire into the cause of fire. Mehjabin inquired after her friends.
Perfect for (সঠিক, মানানসই): The new book is perfect for you.
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Idioms
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
For good (চিরদিনের জন্য): He left the house for good.
In no time (শীঘ্র): He will finish the work in no time.
Three score (ষাট): He is happy as his brother got three score.
Weal and woe (সুখ-দুঃখ): Human life is full of weal and woe.