烯 xī alkene Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 聚乙烯是制作塑料袋的主要材料。 jù yǐxī shì zhìzuò sùliàodài de zhǔyào cáiliào. Polyethylene is the primary material used to make plastic bags. Source: Dong Chinese Dictionary