Rontgen rays : রঞ্জন রশ্মি;
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Appropriate Prepositions
Devoted to (মনোযোগী): He is devoted to music.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
Heir to (উত্তরাধিকার পাওয়া): He is an heir to a vast property.
Indulge in (আসক্ত): You should not indulge in social media.
Play with (খেলা করা/ মজা করা): I shall not play with him.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
Cock and bull story (আষাঢ়ে গল্প): You must be ashamed of your cock and bull story.
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.
Without fail (অবশ্যই) - You must attend the meeting without fail.