A white elephant : অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা;
Related Words
a white elephant  awhiteelephant  See Words Also In
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Appropriate Prepositions
Based on(প্রতিষ্ঠিত, ভিত্তিক): His information is not based on the correct information.
Deal with (কারো সাথে ব্যবহার বা আচরণ করা): Shahid can deal well with the customers.
Remind of (স্মরণ করিয়ে দেওয়া): He reminded me of his request to lend him some money.
Take after (সদৃশ হওয়া, একই রকম হওয়া): The boy takes after his brother.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
At the eleventh hour (at the last moment-শেষ মুহুর্তে adv.) The patient was in a dangerous condition and the doctor came at the eleventh hour.
Bear in mind (remember— মনে রাখা —V): You should also bear in mind the additional costs of the mortgage.
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
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.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.