Build castles in the air ( আকাশ কুসুম চিন্তা করা ) Don't idle away your time in building castles in the air.
Come to light ( প্রকাশিত হওয়া ) Their private talk has come to light at last.
At arm’s length ( দূরে ) Try to keep the bad boy at arm’s length.
On the spur of the moment ( মুহুর্তের উত্তেজনায় ) He did it on the spur of the moment.
In the long run ( পরিশেষে ) You will have to suffer in the long run.
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.