Epidemiology : রোগবিস্তার-সংক্রান্ত বিদ্যা; মহামারী-সংক্রান্ত বিদ্যা;
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Appropriate Prepositions
Aware of(অবগত): I am not aware of his dishonesty.
Careless of(অসতর্ক): Do not be careless of your health.
Deal in, with, out (ব্যবসা করা, ব্যবহার করা, বন্টন করা): The man deals in rice. He does not know how to deal with a customer. The Chairman dealt out the relief materials to the flood affected people.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Guard from/against (রক্ষা করা): My parents always guard me from/against bad people.
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Idioms
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
Hush money (ঘুষ): He offered a hush money to disclose the file.
Milk and honey – (প্রাচুর্য)- He lives with milk and honey.
Short cut (সংক্ষিপ্ত পথ)— He comes by this shortcut.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.