Respirator : রেস্পিরেটর; শ্বাসমুখোশ; কৃত্রিম শ্বসন চালু রাখার যন্ত্র; শ্বাসবায়ু-শোধক মুখোশযন্ত্র;
Related Words
recuperator  respirator  respiratory  respiratory organ  respiratorysystem  See Words Also In
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Appropriate Prepositions
Arrive at(উপস্থিত হওয়া, পৌছানো): The train arrived at Dhaka station on time.
Dwell upon (আলোচনা করা): They dwell long upon the matter.
Informed of (অবহিত): I was not informed of your misfortune.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
Smile on/upon (অনুগ্রহ করা): Fortune smiles on/upon the brave.
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Idioms
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Nip in the bud (অঙ্কুরে বিনষ্ট হওয়া): All his hopes were nipped in the bud.
On the whole (মোটের ওপর): On the whole, his conduct is good.
To the backbone (to the core, হাড়ে হাড়ে) —The boy is wicked to the backbone.