Fly wheel : চলন্ত চাকা;
Related Words
feel  flee  fly wheel  flywheel  See Words Also In
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Careful of(যত্নশীল থাকা): Sadia is careful of her health.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Run after (পশ্চাদানুসরণ করা): Do not run after money.
Succeed in (সাফল্য লাভ করা): He succeeded in life.
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Idioms
Follow the footsteps of (পায়ে পায়ে অনুসরণ করা): People always follow the footsteps of some great man.
Read between the lines (understand the significance, অন্তনিহিত অর্থ বুঝা) Try to read between the lines of the letter.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.
Turn over a new leaf (begin a new phase of life, নবজীবন শুরু করা) —After his failure he turned over a new leaf.