大约有35%到40%的学生是“交换生”(那些在一个校区开始，在另一个完成学业的人)。

About 35-40% of students are "switchers" (who start their degrees in one campus and finish in another).

youdao

如果必要，一个实现可以在部署时或甚至在运行时轻松交换为另一个实现。

If necessary, an implementation can easily be swapped out for a different one at deploy time or even at run time.

youdao

使其不同或变得不同；更改；在另一个地方拿去、放置或利用；交换；被另一个替代；修正、变异、转变、变向、改变。

To make or become different: alter; to take, put, or use in place of another: exchange; to replace by another; modify, mutate, transform, turn, vary.

youdao