螅 xī intestinal worm Definitions Defs Origin Strokes Stroke Words Sentences Sents 1 sentence 我们在生物课上用显微镜观察水螅。 wǒmen zài shēngwùkè shàng yòng xiǎnwēijìng guānchá shuǐ xī. We observed hydras under a microscope in biology class. Source: Dong Chinese Dictionary