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
Abide with(সঙ্গে থাকা): If you would like to rest for a while, you can abide with me.
Adept in (দক্ষ): He is adept in playing football.
By heart (মুখস্থ): Kamal learnt to poem by heart.
Call on(কারও সাথে দেখা করা): I called on him in his office.
Heir of (উত্তরাধিকারী): He is the heir of his father.
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Idioms
At home (comfortable— আরাম) He feels at home in Dhaka now.
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Call in question (সন্দেহ করা): No one can call his honesty in question.
In lieu of (পরিবর্তে): Give me this pen in lieu of that.