circum continentalcircum-continental环: ring; hoop大陆: continent; mainland的: 4次方是 The fourth power of 2 i ...大陆的: continental环大陆地槽: circumcontinental geosyncline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:环大陆的,即可在微信中查询翻译