Systematics : উদ্ভিদের বর্গীকরণ-বিদ্যা;
Related Words
systematic  systematical  systematically  systematics  systematize  systematized  systematizes  systematizing  See Words Also In
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Appropriate Prepositions
Adequate to(সমানুপাতিক): The salary, he gets, is not adequate to the volume of work he has to do.
Averse to (বিমুখ): Rahim was averse of your various problems.
Due to (কারণে): His absence is due to illness.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Famous for (বিখ্যাত): Smith is famous for his wisdom.
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Idioms
Bear in mind (মনে রাখা): Always bear in mind that you are a daughter of a reputed person.
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
On the wane (হ্রাসমান): His fame is on the wane now.
Right and left (এলোপাথাড়ি - indiscriminately): He planted trees right and left.
Run into debt (ঋণগ্রস্ত হওয়া)— He ran into debt.