Speedometer : স্পীডমিটার; দ্রুতিমাপক; গাড়ীর বেগমাপক যন্ত্রবিশেষ; গতিমাপক যন্ত্র;
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Appropriate Prepositions
Capable of(সক্ষম): He is capable of doing it.
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
Consent to(মত দেওয়া): My father did not consent to the proposal of my sister’s marriage.
Guess at (অনুমান করা): It is difficult to guess at the age of women.
Play on (বাজানো): They play on the piano.
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Idioms
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.