Toothpaste tubes are also problematic because they can't be recycled.

牙膏管也是有问题的，因为它们的材料不能被回收利用。

The toothpaste tube in the bathroom is never empty.

从来不会出现浴室没有牙膏的情况。

Besides pleasing customers who like to get their money's worth, the new, slippery toothpaste tubes should help with recycling.

这种新型超顺滑牙膏管除了能让那些不喜欢白白浪费钱的顾客开心，应该还有助于废物利用。

Who's squeezing the toothpaste tube from the middle?

是谁从牙膏管的中间开始挤的？

As he got closer, he saw a steel pot sitting on top of the coals with the toothpaste tubes were being melted down.

当他走近时，看到一口钢锅架在炭上，里面的废牙膏皮正在熔化。

Along with a fire and a box of spent toothpaste tubes in front of him, we're two little boys covered with white dust smiling from ear to ear.

除了一堆火和一盒子废牙膏皮，他面前还站着两个灰头土脸的小男孩，他们正咧着嘴笑着。

Colgate-Palmolive, an American consumer-goods giant, has taken up an invention by a pair of experts in super-slippery surfaces to produce toothpaste tubes that promise to deliver every last scrap of their contents.

美国消费品巨头高露洁棕榄采纳了两位研究超光滑表面的专家的发明，生产出的牙膏管承诺能把牙膏挤得一滴不剩。

Finally, the signal disperses out into Purkinje fibers, which trigger depolarization in all surrounding cells, causing the ventricles to contract from the bottom up like toothpaste tubes, at which point the whole cycle starts all over again.

最后，信号分散到浦肯野纤维中，触发周围所有细胞的去极化，导致心室像牙膏管一样自下而上收缩，此时整个循环重新开始。