Unalterably : অপরিবর্তনীয়রূপে;
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Appropriate Prepositions
Acquit of (অব্যাহতি দেয়া): The chief justice acquitted him of the charge of murder.
Annoyed with(ব্যক্তির সাথে বিরক্ত হওয়া): I am annoyed with him.
Count on/upon (নির্ভর, বিশ্বাস করা): Rahim count on (upon) my help.
Free from (মুক্ত): He is now free from danger.
Taste for (রুচি; পছন্দ): He has a great taste for music.
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Idioms
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Ins and out (খুঁটিনাটি): I know ins and outs of this file.
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.