Give it a shot! 試試看!
A: It would be so cool if I can win this contest. I don'tthink I'm good enough, though.
A: 要是我可以贏了這項比賽的話會有多好。但我不認為自己夠好.
B: Give it a shot! You'll never know.
B: 試試看啊! 沒試怎么會知道!
"cool" 是"很棒"的意思. "You'll never know." 是"你不知道會怎么樣"的意思.
要想說, 我知道這個可能沒戲.你可以說,I know it is a long shot, but Iwould still like to give it a try. 你起草了一份計劃書,發給項目組里面的同事請他們幫忙修改,你可以說,this is my first shot at the project proposal, please feelfree to edit as you see fit. 你也可以說, this is my first stab.Stab是桶一刀子的意思, 放在這里就變成my first try.