Heterogeneity : বিষমসত্ত্বতা; বর্ণসঙ্করতা; দোআঁশলা;
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Appropriate Prepositions
Adhere to (লেগে থাকা, অটল থাকা): You should adhere to your principal.
Affection for(স্নেহ): She has a great affection for the child.
Cause for (চিন্তিত হওয়ার কারণ): He has never given me any cause for concern.
Long for (আশা করা/কামনা করা): He longed for name and fame.
Satisfied with (সন্তুষ্ট): The authoress was highly satisfied with Jerry.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Back and bally (জীবিকা, ভরণ পোষণ—n) Who will provide the increasing population with the required back and bally?
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
On the wane (হ্রাসমান): His fame is on the wane now.
Weal and woe (joy and sorrow, সুখ দঃখ) —Human life is full of weal and woe.