serpentine

1. ADJ Something that is serpentine is curving and winding in shape, like a snake when it moves. 彎彎曲曲的; 蜿蜒的[文學性]

...serpentine woodland pathways. ...蜿蜒的林間小路。

2. N a curve that is symmetric about the origin of and asymptotic to the x-axis S形曲線; 蛇形線[maths]

3. N a dark green or brown mineral with a greasy or silky lustre, found in igneous and metamorphic rocks. It is used as an ornamental stone; and one variety (chrysotile) is known as asbestos. Composition: hydrated magnesium silicate. Formula: Mg3Si2O5(OH)4. Crystal structure: monoclinic 蛇紋石