Test tube : একমুখ ঢাকা কাচের নল;
Related Words
test paper  test tube  test tube baby  test-tube  test-tube baby  See Words Also In
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Appropriate Prepositions
Apologize to (ক্ষমা প্রার্থনা করা, দুঃখসহ ত্রুটি স্বীকার করা): The student apologized to the Principal for adopting unfair means in the examination.
Call in(ডাকিয়া আনা): They called in a doctor.
Concerned for (উদ্বিগ্ন): The parents are concerned for their growing children.
Play on (বাজানো): They play on the piano.
Recover from (সুস্থ হওয়া; পূর্ব অবস্থায় ফিরে আসা): The patient has not yet recovered from his severe illness.
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Idioms
As a whole (মোটের উপর, সম্পূর্ন এক মনে করে-adv.) Look at life as a whole and you will see that it is meaningful.
Dead against (তীব্র বিরোধী - strongly opposed to): I am dead against corruption.
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Weal and woe (joy and sorrow, সুখ দঃখ) —Human life is full of weal and woe.