Bivalent : দ্বিযোজী;
Related Words
bivalent  blend  blent  blunt  See Words Also In
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Appropriate Prepositions
Bad at (অদক্ষ): He is not bad at English.
Bark at(ঘেউ ঘেউ করা): The dog is barking at the strange woman.
Complain about (কোনো বিষয়ে নালিশ করা): They complained about the mismanagement of the programme.
Fantasize about (কল্পনা করা): They fantasized about winning the lottery.
Loyal to (অনুগত): Every citizen must be loyal to the state.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
Give in (বশ্যতা স্বীকার করা): We will never give in to our enemies.
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Read between the lines (understand the significance, অন্তনিহিত অর্থ বুঝা) Try to read between the lines of the letter.