The differences in the penetration mechanism between cuspidal and blunt projectiles are studied.

研究了尖头、钝头弹在侵彻机理上的差异。

Why do I want to recycle projectiles anyway?

话说为什么要回收投射物呢？

Your parents know how to launch nasal projectiles.

你的父母懂得如何用力擤鼻涕。

Ballistics: the study of the dynamics of projectiles.

弹道学：关于射弹动力学的研究。

Projectiles no longer hurt the player when reflected.

投掷物反射时不再伤害玩家。