Ruthenium : রূটীনিয়মপদার্থ; প্ল্যাটিনাম গোত্রের একটি বিরল মৌল;
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Appropriate Prepositions
Answer for(কোনো কারনে জবাবদিহি করা): He will have to answer for his misdeeds.
Concerned for (উদ্বিগ্ন): The parents are concerned for their growing children.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
Infested with (অতিষ্ঠ): The room is infested with rats.
Regard for (সম্মান): Good boys have great regard for their teachers.
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Idioms
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
Bring to light (disclose-প্রকাশ করা) The police brought the secret to light.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.
Slow coach (অলস): You cannot expect much from a slow coach.