基本解釋n.余矢同根派生 coversine相關(guān)詞英漢例句He firmly believed that there would not be a fire because he had the fire-retardant coversine. 老人深信，有了這個(gè)罩家里就不會(huì)發(fā)生火災(zāi)。coversine trigonometric 三角余矢coversine更多例句