Nacrum
(=nacre)珍珠质
🗣️ 情景例句
It was on his birthday, June second, two years ago.
是在他生日那天。两年前的六月二日。
The spacecraft is scheduled to arrive at Saturn next year.
太空船预定明年到达土星。
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.
在这个地带的低处是很长的一段尾沙地段，基本上可以断定这个地段是大陆块体上侵蚀下来的物质被水冲到深水处形成的。