刚上路的新手,初来乍到者someone or something that is new in a place, organization, or situation, usually one in which they have to compete with others
Realizing I was the new kid on the block in this job, I was determined to prove myself. 意识到自己在这份工作上还是个新手之后,我下定决心要证明自己的能力。
Sooner rather than later the established companies are going to have to accept there's a new kid on the block.
This restaurant is the new kid on the block, having opened only a few months ago.
As new kids on the block, they kind of wanted to prove themselves - that they were the team to beat.