From hand to mouth( দিন আনে দিন খায় ) The poor man lives form hand to mouth.
As if( যেন ) He swims so beautifully as if he is the Olympic gold medalist.
Slip of the tongue( বলায় সামান্য ভুল ) This is a slip of the tongue, don't lay much stress on it.
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.
In a hurry( তাড়াহুড়ার মধ্যে ) Don't do the work in a hurry.
At bay( কোনঠাসা ) The tiger was at bay in the bush.