Systematics : উদ্ভিদের বর্গীকরণ-বিদ্যা;
Related Words
systematic  systematical  systematically  systematics  systematize  systematized  systematizes  systematizing  See Words Also In
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Appropriate Prepositions
Careful of (সতর্ক): He is very careful of his fault.
Complain about (কোনো বিষয়ে নালিশ করা): They complained about the mismanagement of the programme.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Indifferent to (উদাসীন): Everybody is indifferent to my problem.
Urge upon (আহবান জানানো): She urged upon his son the importance of being honest.
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Idioms
As a whole (মোটের উপর, সম্পূর্ন এক মনে করে-adv.) Look at life as a whole and you will see that it is meaningful.
Fish out of water (অস্বস্তিকর অবস্থা): When he came to the village, he felt like fish out of water.
Gala day (বিশেষ দিন): The Eid–Ul-Fitr is a gala day for Muslims.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?