孩子们相信外星人住在遥远的星球上。

Children believe ___aliens live on distant planets.

这位外国人在美国工作多年，但仍然是外籍居民身份。

The ___alien has worked in the US for years but still holds a foreign resident status.

这种奇怪的味道对我来说太陌生了。

This strange taste is completely ___alien to me.