To serve as a substitute的意思|示意

It will serve as a complement to, rather than a substitute for, other global and regional multilateral development banks, and will operate under theexisting international economic and financial order.

它同其他全球和区域多边开发银行的关系是相互补充而不是相互替代的，将在现行国际经济金融秩序下运行。

If all school days are filled, the parents need to sign up on the substitute list as a back-up or serve on other school activities.

如果所有的上课日都有人登记了，家长可登记在替代名单上作为替补或帮助学校的其他活动。

Aware of the importance of extracellular matrix, tissue engineers have long sought an ideal substitute to serve as a platform for growing living tissues.

组织工程学家了解到细胞外间质的重要性后，就一直在找寻一种理想的替代品，以做为活体组织生长的基台。