1. countries that are foreign or unfamiliar; nations with different customs, laws, or governance
The diplomat traveled to several alien countries to establish trade agreements.
O diplomata viajou para vários países estrangeiros para estabelecer acordos comerciais.
2. nations considered distant, strange, or incomprehensible in culture or ideology
These customs seem alien to countries with different traditions.
Esses costumes parecem estranhos para países com tradições diferentes.