Lifescience : জীবতত্ত্ব;
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life science  life sciences  lifescience  See Words Also In
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Appropriate Prepositions
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
Look at (তাকানো): Students look at the blackboard.
Suffer from (অসুখে ভোগা, কষ্ট পাওয়া): He has been suffering from fever for last three days.
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Idioms
Call in question (সন্দেহ করা): No one can call his honesty in question.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
Riding for a fall (বেপরোয়াভাবে কাজ করা- to act recklessly): He rides for a fall in the election.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.