4 sentences

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. 这种蠕虫常见于潮湿的土壤中。

   zhè zhǒng rú​chóng cháng​jiàn yú cháo​shī de tǔ​rǎng zhōng.

   This type of worm is commonly found in moist soil.

   Source: Dong Chinese Dictionary

3. 这种药物有助于促进肠道的蠕动。

   zhè zhǒng yào​wù yǒu​zhù​yú cù​jìn cháng​dào de rú​dòng.

   This medicine helps promote intestinal peristalsis.

   Source: Dong Chinese Dictionary

4. 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