板玻璃的纵向裂纹
(飞机作)蛇形飞行

Snake \Snake\, v. t. [imp. & p. p. {Snaked}; p. pr. & vb. n.
{Snaking}.]
1. To drag or draw, as a snake from a hole; -- often with
out. [Colloq. U.S.] --Bartlett.

2. (Naut.) To wind round spirally, as a large rope with a
smaller, or with cord, the small rope lying in the spaces
between the strands of the large one; to worm.