Proteins are linear chains of building blocks called amino acids.

蛋白质是由称为氨基酸的构建单元组成的线性链。

We're looping through how we do these reductions, whereas today the reasoning is a linear chain of descent through the levels.

我们正在循环我们如何进行这些减少，而今天的推理是通过级别的线性下降链。

Instead of electrical signals traveling uninterrupted across a network of fibers, he proposed that signals were somehow jumping from cell to cell in a linear chain of activation.

他提出，信号不是通过纤维网络不间断地传播，而是以某种方式在线性激活链中从一个细胞跳到另一个细胞。