chitei tairiku orudoora地: the earth底: bottom; base大陆: continent; mainland海底大陆边缘: submarine continental margin地底点: ground nadir point; groundnadirpoint下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:地底大陆，即可在微信中查询翻译
