Astronautics : মহাকাশ যাত্রার বিদ্যা;
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astronautics  astronauts  See Words Also In
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Appropriate Prepositions
Annoyed for(কোনো কারনে বিরক্ত হওয়া): The officer was annoyed with the clerk for being late.
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
Attacked by(আক্রান্ত ব্যক্তিবাচক): He has been attacked by a gang of robbers.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
Object to (প্রতিবাদ করা): Many people objected to the remarks of the leader.
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Idioms
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Gift of the gab (বাকপটুতা): An advocate should have the gift of the gab.
Put the cart before the horse (to reverse the natural order of things-কোনো জিনিসের স্বাভাবিক ক্রমকে পাল্টে দেয়া) - The leader put the cart before the horse.