Spectrograph : বর্ণালীলেখ; স্পেক্ত্রোগ্রাফ; বর্ণালি যন্ত্র;
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Appropriate Prepositions
Curse for (অভিশাপ দেয়া): If he ever mistreats my parents, I will certainly curse him for it.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Grateful to (কৃতজ্ঞ): We should be grateful to our teachers.
Lost in (মগ্ন): Simon is lost in meditation.
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Idioms
Bad names (গালমন্দ—n) He called the man bad names.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.
Steer clear of (avoid, দূরে থাকা)— You must steer clear of evil company.
Soft Soap (নিজ অভিপ্রায়ে/অভিসন্ধিতে তোষামোদ করা): He was expert in soft soap.
With a lavish hand (মুক্ত হস্তে)— Give away something with a lavish hand.