The image of crossed arms also comes through in the name because brachium was Latin for “arm.”

双臂交叉的形象同样也在这个单词中得到体现，因为brachium在拉丁语中就曾经有“臂膀（arm）”的意思。

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He crossed his arms over his chest.

他在胸前交叉双臂。

《柯林斯英汉双解大词典》

I crossed my arms.

我将双臂交叉起来。

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Take crossed arms, for example: In an audience, I expect to see people with their arms crossed sitting in the first row.

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These are: hand touching, face touching, crossed arms, and leaning away.

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Nexi showed that humans are better judges of trustworthiness after they see the telltale body language of dishonesty -- crossed arms, leaning back and other cues -- even when those expressions come from a collection of metal and plastic.

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