平面网板flat: adj. (flatter; flattest) 1.平 ...otter: n. (pl. otters ,〔集合词〕otter) ...board: n. 1.板〔通常指宽4英寸半以上厚2英寸半以下者〕,木 ...oval flat otter board: 椭圆形平面网板rectangular flat otter board: 矩形平面网板下载手机词典可随时随地查词查翻译