Lost labour : নিষ্ফল শ্রম; বেকার খাটনি;
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Appropriate Prepositions
Abhorrence of (ঘৃণা): Everyone should have abhorrence of a par.
Abide with(সঙ্গে থাকা): If you would like to rest for a while, you can abide with me.
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Informed of (অবহিত): I was not informed of your misfortune.
Repent on (নির্ভরশীল): He is repent on his parents.
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Idioms
Bear in mind (remember— মনে রাখা —V): You should also bear in mind the additional costs of the mortgage.
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Hush money (ঘুষ): He offered a hush money to disclose the file.
To play on a fiddle (অনর্থক সময় নষ্ট করা - To waste time)-He played on a fiddle by nature.
Short temper (রগচটা)— He is a man of short temper.