I might be able to pop off a 360 kickflip.

我也许可以做出 360 度尖翻。

During any given day's practice, you'll eventually gonna hit a wall where you stop making progress whether it's learning derivatives in calculus or kickflips in skateboarding.

你最终会在某一天的学习中——无论是学习微积分的导数还是滑板的踢翻——碰到一堵墙，阻隔你的进步。