Standard weight : প্রমাণ ওজন;
Related Words
standard weight  standardisation  standardised  standardization  standardized  See Words Also In
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Appropriate Prepositions
Authority on(বিশেষজ্ঞ পন্ডিত): Kamal was an authority on English literature.
Deal with (কারো সাথে ব্যবহার বা আচরণ করা): Shahid can deal well with the customers.
Die from (কোন কিছু জন্য মারা যাওয়া): The poor person died from hunger.
Play with (খেলা করা/ মজা করা): I shall not play with him.
Run after (পশ্চাদানুসরণ করা): Do not run after money.
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Idioms
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.