There are several printing techniques, and the most popular is extrusion-based bioprinting.

现在有几种打印技术，其中最常用的是挤压式生物打印。

Thanks to 3d bioprinting scientists can create more complex human organs as well.

多亏了3d生物打印技术，科学家们还能制造出更复杂的人体器官。

That's the idea behind bioprinting, a branch of regenerative medicine currently under development.

这就是生物打印的理念。生物打印是再生医学的分支，目前处于发展阶段。

There's tremendous potential to use bioprinting to save lives and advance our understanding of how our organs function in the first place.

生物打印具有极大的潜能，它可以用来拯救生命，以及提高我们对器官运作的了解。

However, replicating the complex biochemical environment of a major organ is a steep challenge. Extrusion-based bioprinting may destroy a significant percentage of cells in the ink if the nozzle is too small, or if the printing pressure is too high.

然而，复制主要器官复杂的生化环境是一项严峻的挑战。挤压式生物打印可能会破坏墨水里很大一部分的细胞，如果喷头太小或打印压力太高。