比喻新生力量new blood

• 市政府经研究决定，引进外地教师，给当地师资队伍补充“新鲜血液”。

  Following research, the city government decided to bring in foreign teachers to inject some new blood into local teaching staff.

• 大学生“村官”的到来，为农村经济社会发展注入了新鲜血液。

  The arrival of university student "village officials" injected some new blood for rural economic and social development.