lithiasis的复数形式怎么拼写？

He has lithiasis, and the violent pain makes him sweat.他患有结石病, 一病发就疼得汗珠直淌.Refer to the lithiasis, many people think that it's caused by eating unhealthy food.提及结石病, 很多人认为是因饮食不卫生而导致体内形成“石头”.The determination of urina...

lithiasis的音标：lithiasis的英式发音音标为：[lɪ'θaɪəsɪs]lithiasis的美式发音音标为：[lɪ'θaɪəsɪs]...

n.结石病...