Mechanical advantage : যান্ত্রিক সুবিধা;
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Appropriate Prepositions
Agree to(ব্যক্তি ছাড়া অন্যকিছুর সাথে একমত হওয়া): We cannot agree to your proposal.
Burst out a laughter(হাসিতে ফেটে পড়া) He bursts out a laughter.
Careless of(অসতর্ক): Do not be careless of your health.
Hatred for (ঘৃণা): I have no hatred for anyone.
Meet with (হঠাৎ কোন কিছু হওয়া): Yesterday I met with an accident.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
At last (in the end – অবশেষে) He tried hard, and at last, succeeded in achieving his goal.
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Short temper (রগচটা)— He is a man of short temper.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.