lava tube

基本解釋

Scientists believe these holes form when the ceiling of a subterranean lava tube collapses, possibly due to a meteorite strike.
科學(xué)家認(rèn)爲(wèi)，地下熔巖洞頂部的坍塌或流星的撞擊，都是這些月球坑形成的原因。
An international team of scientists say they've discovered a protected lunar "lava tube" - a deep, giant hole - that might be well suited for a moon colony or a lunar base, CNN reported Sunday.
據(jù)美國(guó)有線新聞網(wǎng)3日?qǐng)?bào)道，一個(gè)國(guó)際科學(xué)小組宣佈，他們?cè)谠虑蛏习l(fā)現(xiàn)了一個(gè)又大又深的垂直"熔巖洞"，可能適宜人類移民月球或脩建月球基地。
www.chinadaily.com.cn
It's unknown whether the lava is residual material that's draining through the underground tube system or if the flow is still being supplied by lava from the crater, scientists say.
科學(xué)工作者們說(shuō)，不知道熔巖是否是地下琯道系統(tǒng)排出的殘畱物質(zhì)，或者是否火山口的熔巖仍然在提供流量。