Metavolcanics
變質(zhì)火山巖
??? 情景例句
You are in great condition. I can't believe it!
你的身體太好啦。我簡直不敢相信。
Hit the jackpot.
歪打正著。
and near its lower reaches there is a long tailing-off which is almost certainly the result of material transported out to deep water after being eroded from the continental masses.
在這個(gè)地帶的低處是很長的一段尾沙地段，基本上可以斷定這個(gè)地段是大陸塊體上侵蝕下來的物質(zhì)被水沖到深水處形成的。