Radial symmetry : অপকেন্দ্রিক সুসাম্য; প্রতিসাম্য;
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Appropriate Prepositions
Anxious about (কোনো কিছুর ব্যাপারে চিন্তিত বা উদ্বিগ্ন): Karim is anxious about his father’s death. Karim is anxious for getting a job.
Authority over (কর্তৃত্ব, আধিপত্য): She has no authority over his growing daughters.
Bar to(বাধা): Poverty is not a bar to happiness.
Conceal from(লুকানো) Do not conceal anything from me.
Entrust with (কোনো কিছু দ্বারা কাউকে বিশ্বাস করে): He entrusted me with the thing.
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Idioms
At a snail's pace (very slowly – খুব ধীর গতিতে) The economy of Bangladesh is growing at a snail’s pace.
Birds of a feather (persons of like disposition-একই পর্যায়ের লোক) Bird’s of a feather flock together.
Dead language (যে ভাষা এখন আর কথ্য নয়): Sanskrit is a rich language, but it is now a dead language.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.
Wild goose chase (useless pursuit, পন্ডশ্রম) —Do not waste time in wild goose chase.