这座未设防的村庄很容易成为敌人的目标。

The ___unfortified village was an easy target for the enemy.

这种牛奶未经强化，不含额外的维生素D。

This ___unfortified milk does not contain added vitamin D.

在失去工作后，他感到毫无准备，难以面对未来的挑战。

After losing his job, he felt ___unprepared and struggled to face future challenges.