之所以: the reason why I dislike him (is...)...
十: ten,0...
准: accurate, standard, definitely, certainly, about to become (bride, son-in-law etc), quasi-, para-...
小溪: brook, streamlet...
不止: incessantly, without end, more than, not limited to...
兼职: to hold concurrent posts, concurrent job, moonlighting...
往返: to go back and forth, to go to and fro, round trip...
专门: specialist, specialized, customized...