Know-how : ব্যবহারিক জ্ঞান; কারিগরি কৌশল;
Related Words
know  know how  know-how  knowhow  known  See Words Also In
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Appropriate Prepositions
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Damage to (ক্ষতি): The flood caused much damage to crops last year.
Descend on (আক্রমণ করা): Armed thieves descended on the helpless girl.
Hanker after (আকাঙ্ক্ষা/লোভ করা): He hankers after riches.
Loyal to (অনুগত): Every citizen must be loyal to the state.
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Idioms
Bad blood - (শত্রুতা): There has always been bad blood between these families.
Of course (অবশ্যই): Of course, you know what that meant.
On the wane (হ্রাসমান): His fame is on the wane now.
Pick a quarrel (ঝগড়া করা)—Do not pick a quarrel.
Right and left (এলোপাথাড়ি - indiscriminately): He planted trees right and left.