(A period of time/নির্দিষ্ট সময়কাল) after

তিনি মারা যাওয়ার ৩০ দিন বাদে (পরে) তার স্ত্রীও মারা গেলেন। = 30 days after he died his wife died too.

তিনি চলে যাওয়ার কিছুক্ষণের মধ্যেই (মানে, শীঘ্রই) আমরা পুনরায় কাজ শুরু করলাম। = Soon after he left we resumed our work.

তিনি এটা আবিষ্কারের ১৩ বছর পর ঐ আবিষ্কারের জন্য নোবেল পুরষ্কার পেলেন।= 13 years after he had invented this he got the Noble prize for that invention.

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30 days after he died his wife died too. = He died and 30 days later his wife died too.

Soon after he left we resumed our work. = He left and soon we resumed our work.

13 years after he had invented this he got the Noble prize for that invention. = He invented this and 13 years later he received the Noble prize for that invention.