pebblen.鹅卵石n.水晶；水晶透镜v.用卵石铺；用卵石投掷；使有卵石纹pebble structure卵石构造pebble statistic砾石统计pebble tube mill长筒砾磨机pebble phosphate亚磷酸盐团pebble-dashing抛小石粗面pebble clarifier砾石清净器pebble foundation卵石地基Pebble mound mousen.石丘伪鼠pebble falling off石子脱离pebble bed reactor球形床反应堆