new blood
noun [ U ] uk/ˌnjuː ˈblʌd/ us/ˌnuː ˈblʌd/
新鲜血液（指朝气蓬勃或带来新思想的新成员）
people with a lot of energy or fresh ideas who are brought into an organization in order to improve it
The new blood in the team should improve our chances of victory in next week's game. 队伍中的新生力量应该会增加我们下周比赛的胜算。