"The Israelis have been loath to allow anything in that could be used to fabricate weapons that could be launched against the Israelis and that includes rockets or any kind of projectile."

VOA: standard.2010.06.17

You start here and you fire a projectile It's going to go up and it's going to come down.

从这开始,你抛出一个物体,它将上升至一定高度然后落下

耶鲁公开课 - 基础物理课程节选

Being and void, being and void, so now I've got my plus two little projectile coming in, and plus two zooms right through.

有和无，有和无，现在带两个正电荷的发射体进来了，两个正电荷正好穿过。

麻省理工公开课 - 固态化学导论课程节选

Another question is: at what angle should you fire your projectile so it will go the furthest?

另一个问题是以多大角度抛出,物体能飞得最远

耶鲁公开课 - 基础物理课程节选

Then we did some projectile problems.

我们还研究了一些抛体运动

耶鲁公开课 - 基础物理课程节选

That's a problem of projectile motion.

这是抛体运动的问题

耶鲁公开课 - 基础物理课程节选

Projectile motion.

抛体运动

耶鲁公开课 - 基础物理课程节选

Quite often, it's natural to pick x and y in a certain way, because starting a projectile near the Earth, it makes sense to pick the horizontal as x and vertical as y.

我们经常会很自然地选取 x 轴和 y 轴,因为如果在地表附近做抛物运动,我们通常以水平方向为 x 轴,竖直方向为 y 轴

耶鲁公开课 - 基础物理课程节选