parabola|parabolas
这个户外音乐会使用了抛物面麦克风来收集清晰的观众声音。
The outdoor concert used a ___parabola to collect clear audience sounds.
在物理课上,我们学习了抛物线可以用来描述抛体运动的轨迹。
In physics class, we learned that ___parabolas can describe the trajectory of projectile motion.
数学老师用粉笔在黑板上画了一条完美的抛物线。
The math teacher drew a perfect ___parabola on the blackboard with chalk.