Antimatter : প্রতিবস্তু; সমান ভর কিন্তু বিপরীত আধানযুক্ত মৌলকণা দ্বারা গঠিত বস্তু;
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Appropriate Prepositions
Akin to(সমজাতীয়): These are akin to one another.
Greed for (লোভ): He has an indomitable greed for wealth.
Indulge in (আসক্ত): You should not indulge in social media.
Informed of (অবহিত): I was not informed of your misfortune.
Relation with (সম্পর্ক): I have no relation with the culprit.
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Idioms
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.
White elephant (অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা): At last the department proved to be a white elephant.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.