Heliograph : সূর্যকিরণ সাহায্যে সংকেত পাঠাইবার যন্ত্র
Related Words
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Appropriate Prepositions
Apathy towards (অনাগ্রহ): The student has great apathy towards his studies.
Break in (কথার মাঝে কথা বলা): As she was talking, he suddenly broke in, saying, ‘that’s a rat!’
Indispensable to (অত্যাবশ্যকীয়): Your help is indispensable to him.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Subject to (সাপেক্ষে): The man was appointed subject to the approval of the chairman.
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Idioms
All in - (পরিশ্রান্ত): I was all in after the meeting.
At home (comfortable— আরাম) He feels at home in Dhaka now.
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
In a fix (মুশকিলে পতিত হওয়া): The man is in a fix with his new hairstyle.
Put up with (সহ্য করা - tolerate): I could not put up with his behavior.