Carapace : কাঁকড়া কচ্ছপ প্রভৃতির খোলা; খোলা;
Related Words
carapace  carapaces  carps  craps  See Words Also In
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Comply with(মেনে নেওয়া): The clerks must comply with the orders of their officer.
Descend on (আক্রমণ করা): Armed thieves descended on the helpless girl.
Grateful to (কৃতজ্ঞ): We should be grateful to our teachers.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
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Idioms
Back and forth (to and fro-এদিক ওদিক – adv.) The mad man was walking back and forth in the doctor’s chamber.
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Give in (বশ্যতা স্বীকার করা): We will never give in to our enemies.
Pass away (মারা যাওয়া)— He passed away last night.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.