Rontgen rays : রঞ্জন রশ্মি;
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Appropriate Prepositions
Attention to(মনোযোগ): He has no attention to his studies.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Meet with (হঠাৎ কোন কিছু হওয়া): Yesterday I met with an accident.
Object to (আপত্তি করা): He objected to my proposal.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
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Idioms
Bear hard upon (behave rudely-নির্দয়ভাবে ব্যবহার করা - V) Never bear hard upon your servants.
Cock and bull story (আষাঢ়ে গল্প): You must be ashamed of your cock and bull story.
Fish in a troubled water (এলোমেলো অবস্থার সুযোগ নেয়া): He made a lot of money by fishing in a troubled water.
Out of sorts (সামান্য অসুস্থ): The baby is out of sorts after playing.
Pin money (স্ত্রীর দেয়া হাত খরচ)— She saved her pin money.