Radioactivity : তেজস্ক্রিয়তা;
Related Words
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Appropriate Prepositions
Comply with(মেনে নেওয়া): The clerks must comply with the orders of their officer.
Count for(গণ্য বা বিবেচিত হওয়া): There can be no lasting peace without true democracy in which the people play a part and count for something.
Hatred for (ঘৃণা): I have no hatred for anyone.
Inquire of, about, into, after (অনুসন্ধান করা): Roma inquired of me about my father’s health. The pope will inquire into the cause of fire. Mehjabin inquired after her friends.
Penalty for, with (দণ্ড, জরিমানা): She has paid the penalty for the misuse of power with two years in prison.
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Idioms
At a low ebb (in an unfavorable situation প্রতিকুল অবস্থায়, ভাটির মুখে) The popularity of this singer is now at a low ebb.
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
At the top of (শীর্ষে): The boy shouted at the top of his voice.
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.