Rarefactions : তনুভবন; বিরলীকরণ;
Related Words
rarefactions  revocations  See Words Also In
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Appropriate Prepositions
Add to (বৃদ্ধি করা, যোগ করা): The doll-dance in the exhibition added to our pleasure.
Apology for (কোনো কারনে ক্ষমা চাওয়া): Sajib should ask apology to her of his mistake.
Object to (আপত্তি করা): He objected to my proposal.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
Regard for (সম্মান): Good boys have great regard for their teachers.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Run a risk (ঝুকি নেয়া) — He ran a risk to save his life.