Know-how : ব্যবহারিক জ্ঞান; কারিগরি কৌশল;
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Appropriate Prepositions
Ascend from (উপরে ওঠা): Rahim watched the mist ascending from the valley.
Decide upon (সিদ্ধান্ত করা): We have not yet decided whether we are going to picnic.
Devoted to (মনোযোগী): He is devoted to music.
Look for (খোঁজা): I was looking for the lost phone.
Make from (কোনো উপকরণ দ্বারা সরাসরি তৈরী নয় বোঝাতে): Paper is made from bamboo.
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Idioms
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
Base born (নীচ বংশজাত, খারাপ জাত—adj.) He is a base born person; I cannot go along well with him.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Pin money (স্ত্রীর দেয়া হাত খরচ)— She saved her pin money.
Stone’s throw (অতি নিকটে): Our school is at a stone’s throw from our house.