migration freedom的用法和樣例：
例句
- The principle of freedom of movement is a basic principle in the international migrational law.
遷徙自由原則是國際移民法的基本原則。 - The rear upright features three pivot balls making it fully adjustable in all angles making for more complete adjustment and freedom of movement of the rear suspension.
后方正派具有三個(gè)支點(diǎn)球，使之完全可調的，在各個(gè)角度來(lái)制定較完整的調整和遷徙自由的后懸掛。
