瑪 mǎ agate stone Definitions Defs Origin Strokes Stroke Words Sentences Sents 1 sentence 珈玛射线具有极强的穿透力。 jiā mǎ shèxiàn jùyǒu jí qiáng de chuāntòulì. Gamma rays have extremely strong penetrating power. Source: Dong Chinese Dictionary