
projectiles
词源
源自拉丁语 'projectilis'(可投掷的),由 'pro-'(向前)和 'jacere'(投掷)组成,17世纪进入英语。
noun
❶ 指被投掷、发射或推动的物体,通常用于描述武器中的子弹、炮弹或任何被高速抛出的物体。
“The soldiers loaded their rifles with small metal projectiles.”
(士兵们将金属子弹装入步枪。)
“Ancient warriors used stones as projectiles in their slings.”
(古代战士用投石器将石块作为投射物。)
❶ 在物理学中,指任何被抛射或发射后沿弹道运动的物体。
“The physics teacher demonstrated how gravity affects falling projectiles.”
(物理老师演示了重力如何影响下落的抛射体。)
“We calculated the trajectory of various projectiles in our experiment.”
(我们在实验中计算了各种抛射体的轨迹。)
常见短语
live projectiles — 指实弹或具有实际杀伤力的投射物,区别于训练用的空包弹或无害物体。
“The military exercise was conducted using live projectiles for realism.”
(军事演习使用实弹以达到真实效果。)
projectile motion — 物理学术语,描述物体被抛出后在重力作用下的运动轨迹。
“Students analyzed the projectile motion of a baseball during physics class.”
(学生们在物理课上分析了棒球的抛体运动。)