Keyhole : চাবির ছিদ্র; তালার নাই; তালাতে চাবি ঘোরানোর গর্ত;
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Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Composed of(তৈরী): This medicine is composed of vitamins and minerals.
Look up (ডিকশনারি থেকে শব্দার্থ খোঁজা): He is looking up a new word meaning from dictionary.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
Sorry for (দুঃখিত): He is sorry for his misdeeds.
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Idioms
In the wake of (ঠিক পরে): Police came in the wake of the accident.
Laughing stock (হাসির পাত্র)— He is a laughing stock to all.
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
To the point (সঠিক) - The boy answered the question to the point.