Bio chemical : প্রাণরসায়নিক;
Related Words
bio chemical  biochemical  See Words Also In
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Apology to (কারো কাছে ক্ষমা চাওয়া): Rakib should ask apology to her.
Attest to(প্রত্যয়ন করা): I like to attest to your ability.
Dull of (বধির; কানে শুনে না): He is dull of hearing.
Infested with (অতিষ্ঠ): The room is infested with rats.
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Idioms
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Cut a sorry figure (খারাপ ফল করা): He cuts a sorry figure in the examination.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Set free (মুক্ত করা): The prisoners were set free.
Take to one's heels (to run away, পালানো)- They took to their heels when they saw the policeman approaching.