Panic button : জরুরি সংকেত-জ্ঞাপক বোতাম;
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Appropriate Prepositions
Caution against(সাবধান): Take all cautions against the danger.
Damage to (ক্ষতি): The flood caused much damage to crops last year.
Deprived of (বঞ্চিত): He was deprived of education due to extreme poverty.
Meet with (হঠাৎ কোন কিছু হওয়া): Yesterday I met with an accident.
Similar to (সদৃশ): My T-shirt is similar to yours.
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Idioms
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Make hay while sun shines (ঝোপ বুঝে কোপ মারা) You should try to make hay while sun shines.
Pick a quarrel (ঝগড়া করা)—Do not pick a quarrel.
Riding for a fall (বেপরোয়াভাবে কাজ করা- to act recklessly): He rides for a fall in the election.