ፕሬዝዳንት ዶናልድ ትራምፕ "ከሁሉም የሦስተኛው ዓለም አገራት" ስደተኞች ወደ አሜሪካ እንዳይገቡ የሚያደርግ "ዘላቂ ዕገዳ" ለመጣል ዕቅድ እንዳላቸው ...
Although there are many functions in the base package of R, sometimes there may not be a function that does exactly what you want. In this case, R allows users to create their own functions and call ...
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