Betatron : বৃত্তাকার পথে ইলেকট্রনের গতিবেগ বৃদ্ধি করার যন্ত্র;
Related Words
bathroom  be torn  betatron  better ment  betterment  bittern  bitterns  See Words Also In
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Appropriate Prepositions
Addicted to(খারাপ কিছুতে আসক্ত): She is addicted to collecting stamps.
Aptitude for(স্বাভাবিক দক্ষতা, যোগ্যতা): He has no aptitude for public service.
Complain to (কারো কাছে নালিশ করা): You should not complain to his parents.
Devoted to (মনোযোগী): He is devoted to music.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
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Idioms
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
On the wane (হ্রাসমান): His fame is on the wane now.
Out of order (বিকল): The elevator was out of order.
Pave the way (সুপ্রসন্ন করা) – I am sure I can pave the way for your success.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.