shell bottom贝壳: conch; shell; shell of shell ...底: bottom; base壳套罩管壳贝壳底: shell细沙带泥与贝壳底: fine sand with mud and shells贝壳: conch; shell; shell of shell animals; sea shell◇贝壳工艺品 shellwork下载手机词典可随时随地查词查翻译