A Christmas cracker is a brightly decorated cardboard tube filled with fun prizes.

圣诞饼干是一种装饰鲜艳的纸板筒，里面装满了有趣的奖品。

Once you are done demonstrating whatever concept was in the; textbook, you throw away the pipe cleaners, the straws, the cardboard tubes.

一旦你完成了演示中的任何概念；教科书，你扔掉管道清洁器、吸管、硬纸管。

There is at least one constant in the lives of Marco and Marimar since the days he was pushing a cart and hollering out of a cardboard tube.

自从马可推着一辆手推车，从纸板管里喊叫以来，马可和马里马尔的生活中至少有一个不变的事情。

To probe this perception, researchers at Princeton asked volunteers to look at a computer screen and gauge the angle at which a cardboard tube… shown being slowly tilted on its side… would finally topple over.

为了探究这种看法，普林斯顿大学的研究人员要求志愿者看着电脑屏幕， 并测量纸板管… … 显示在其侧面缓慢倾斜… … 最终翻倒的角度。