var twoDimArr = [
  ['qwe', 123, 'asd'],
  ['qasdxzce', 123, 62],
  ['asd', 123, 'v'],
  ['sd', 123, '54'],
  ['hy', 123, 'nh']
]

let result = twoDimArr.map((arr) => arr.((elem) => '' + elem))
                      .filter((arr, index) => (index % 2) === 0)
                      .map((arr) => arr.join(' '))
                      .join('\n')

console.log(result)