单词 外凸 例句 DEFINITIVE EXAMPLES 权威例句〔bay〕An opening or recess in a wall.壁凹;墙洞:墙上向内凹或向外凸的部分或孔隙美国传统〔protuberant〕He stared at me with blue, slightly protuberant eyes.他用那双稍微有些外凸的蓝眼睛盯着我。剑桥高阶His teeth p...