2 sentences for 蠕动 (rú​dòng — wiggle)

1. 毛毛虫在叶子上缓慢地蠕动。

   máo​mao​chóng zài yè​zi shàng huǎn​màn de rú​dòng.

   The caterpillar is wiggling slowly across the leaf.

   Source: Dong Chinese Dictionary

2. 宇航员在荒凉的行星表面发现了一个正在蠕动的异物。

   yǔ​háng​yuán zài huāng​liáng de xíng​xīng biǎo​miàn fā​xiàn le yī gè zhèng​zài rú​dòng de yì​wù.

   The astronaut discovered a wriggling unidentified object on the desolate planet's surface.

   Source: Dong Chinese Dictionary