Heliograph : সূর্যকিরণ সাহায্যে সংকেত পাঠাইবার যন্ত্র
Related Words
heliograph  holography  See Words Also In
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Appropriate Prepositions
Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Change into (পরিবর্তিত হওয়া): At what point does boiling water change into vapor.
Deaf to, of, in (না শোনা, বধির হওয়া): The boy is deaf to his father’s advice. This man is deaf of/in one ear.
Derive from (উৎসারিত হওয়া): The one has been derived from the poem.
Long for (আশা করা/কামনা করা): He longed for name and fame.
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Idioms
Brown study (দিবাস্বপ্ন): The girl is absorbed in a brown study.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
To the backbone (to the core, হাড়ে হাড়ে) —The boy is wicked to the backbone.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.
With might and main (যথা শক্তি দিয়ে) —He tried with might and main to help me.