Heliograph : সূর্যকিরণ সাহায্যে সংকেত পাঠাইবার যন্ত্র
Related Words
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Appropriate Prepositions
Bark at(ঘেউ ঘেউ করা): The dog is barking at the strange woman.
Grateful to (কৃতজ্ঞ): We should be grateful to our teachers.
Guard from/against (রক্ষা করা): My parents always guard me from/against bad people.
Hanker after (আকাঙ্ক্ষা/লোভ করা): He hankers after riches.
Heir to (উত্তরাধিকার পাওয়া): He is an heir to a vast property.
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Idioms
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Dead language (যে ভাষা এখন আর কথ্য নয়): Sanskrit is a rich language, but it is now a dead language.
For good (চিরদিনের জন্য): He left the house for good.
In the long run (পরিণামে): You will have to suffer in the long run.
To and fro (hither and thither, এদিক ওদিক)-The man is walking to and fro.