So assisted migration can have unpredicted outcomes for the new environment.

所以，帮助树木移植到一个新的坏境看来结果不可预料。

However, climate change is causing many tree experts to specifically consider them — a practice called " assisted migration."

然而，气候变化导致许多树木专家专门地考虑它们，这一做法被称为“辅助迁移”。