North American annual or biennial with long soft hairs on the leaves.

北美一年生或两年生植物，叶子上有柔软的长毛。

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Its crisp-textured coat, a combination of hard and soft hairs, may be pepper- or mustard-coloured.

身体毛发卷曲，软硬杂生，呈胡椒色或芥末色。

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The parameters included the hair density, number of white hairs and soft hairs, and abnormality of eyebrows.

主要检查了头发的密度、白发、软发的数目，眉毛的异常等。

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"When the hairs are soft there is minimal drag, which means you do not apply more pressure, " he says, revealing that for many years he practiced his wet-shave technique on a balloon.

WSJ: Razor Sharp | The Return of the Classic Wet Shave