Palaeobotany : প্রত্ন-উদ্ভিদবিদ্যা;
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palaeobotany  phlebotomy  See Words Also In
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Appropriate Prepositions
Authority on(বিশেষজ্ঞ পন্ডিত): Kamal was an authority on English literature.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
Indulge in (প্রশ্রয় দেওয়া): You should not indulge in idleness.
Play with (খেলা করা/ মজা করা): I shall not play with him.
Repent on (নির্ভরশীল): He is repent on his parents.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Beggar description - (অবর্ণনীয় হওয়া): The distress of the Muslims in Bosnia beggars description.
Dead against (তীব্র বিরোধী - strongly opposed to): I am dead against corruption.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.