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.
At least( অন্ততঃ ) At least one hundred boys will come to school today.
At large( স্বাধীন ) The anti-socials are still at large.
Hard nut to crack( কঠিন সমস্যা ) The problem of adult education is really a hard nut to crack.
a piece of cake( খুবই সহজ ) This assignment is a piece of cake
In lieu of( পরিবর্তে ) Give me this pen in lieu of that.