这部纪录片聚焦于气候难民面临的挑战。

The documentary ___focuses ___on the challenges faced by climate refugees.

她决定今年把精力集中在学习一门新语言上。

She decided to ___focus ___her ___energy ___on learning a new language this year.

他最新的研究集中于冥想对大脑可塑性的长期影响。

His latest research ___focuses ___upon the long-term effects of meditation on brain plasticity.