The bulk of many bioinks are water-rich molecules called hydrogels.

许多生物墨水的主体是一种富含水的分子，称作水凝胶。

Some bioinks include a single type of cell, while others combine several different kinds to produce more complex structures.

有些生物墨水只含单一一种细胞，有些则结合许多不同种的细胞，来制造出更复杂的结构。

After printing, some bioinks will stiffen immediately; others need UV light or an additional chemical or physical process to stabilize the structure.

打印完成后，有些生物墨水会立即变硬；有些则需要紫外线，或额外的化学或物理加工来稳定结构。