Heliograph : সূর্যকিরণ সাহায্যে সংকেত পাঠাইবার যন্ত্র
Related Words
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Appropriate Prepositions
Afraid of(ভীত): An honest man is not afraid of telling the truth.
Concerned with(জড়িত): She was concerned with such things.
Covetous of(লোভী হওয়া): He is covetous of wealth.
Indulge in (আসক্ত): You should not indulge in social media.
Popte in, to (মার্জিত): We must be popte in our dealings. One should be popte to
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Idioms
Crying need (জরুরী): Mass education is a crying need for India.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.
To play on a fiddle (অনর্থক সময় নষ্ট করা - To waste time)-He played on a fiddle by nature.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
To the point (সঠিক) - The boy answered the question to the point.