Jackscrew : গুরুভার বস্তু তুলিবার পেঁচালো যন্ত্র;
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Appropriate Prepositions
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Bad at (অদক্ষ): He is not bad at English.
Careless of(অসতর্ক): Do not be careless of your health.
Make from (কোনো উপকরণ দ্বারা সরাসরি তৈরী নয় বোঝাতে): Paper is made from bamboo.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
Back and forth (এদিক ওদিক) The mad man was running back and forth in the hospital.
Put the cart before the horse (to reverse the natural order of things-কোনো জিনিসের স্বাভাবিক ক্রমকে পাল্টে দেয়া) - The leader put the cart before the horse.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.