Of course ( অবশ্যই ) Of course, you know what that means
Birds eye view ( মোটামোটি ধারণা ; এক নজর ) He took a bird’s eye view of the flood-stricken area from an aeroplane.
Far and wide ( সর্বত্র ) His fame as a scholar spread far and wide
A blessing in disguise ( বিপরীতে হিত ; প্রথমে খারাপ হিসেবে মনে হলেও পরবর্তীতে ভালো হয় ) Sam's motorcycle accident was a blessing in disguise because he got enough insurance money.
By the by ( প্রসঙ্গক্রমে ) By the by I came to know that he was ill.