In the left margin we found the tip of a fingerprint.

在左边缘的地方我们找到了一点末端的指纹。

The incision begins along the left subcostal margin, across the right rectus and extending well into the flank.

切口沿着左侧肋间隙开始穿过右侧腹直肌，延伸到胁腹部。

Each line of the inside address is justified at the left margin.

内部地址的每一行在左边距处对齐。

Indented paragraphs should be avoided if the return address was aligned at the left margin.

如果回信地址在左边距对齐，则应避免缩进段落。

He had to get used to pressing a button to return to the left margin of his paper.

他必须习惯按下按钮才能返回到论文的左边距。

You can use either indented paragraphs, in which the first line is indented more than the rest, or block paragraphs, in which all lines begin at the left margin.

您可以使用缩进段落（第一行比其余行缩进得多），也可以使用块段落（所有行都从左边距开始）。