Carboniferous : অঙ্গার-সমৃদ্ধ; অঙ্গারোত্পাদক; কয়লা-উত্পাদক;
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Appropriate Prepositions
Avail (oneself) of(সুযোগের স্বব্যবহার করা): I shall avail myself of the first trip to London tomorrow.
Busy with(ব্যস্ত থাকা): Rahim is now busy with her homework.
Call in(ডাকিয়া আনা): They called in a doctor.
Run after (পশ্চাদানুসরণ করা): Do not run after money.
Sanguine of (নিশ্চিত বা আশান্বিত): Be sanguine of your success.
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Idioms
Birds of a feather (persons of like disposition-একই পর্যায়ের লোক) Bird’s of a feather flock together.
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
In the long run (পরিণামে): You will have to suffer in the long run.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?