Adelite
砷钙镁石
🗣️ 情景例句
You'd better be careful.
你要小心一点。
The mailbox is over there.
邮筒就在那儿。
After switching on powerful arc lights, they saw great stalagmites -- some of them over forty feet high -- rising up like tree-trunks to meet the stalactites suspended from the roof.
他们打开强力弧光灯，看见一株株巨大的石笋，有的高达40英尺，像树干似地向上长着，与洞顶悬挂下来的钟乳石相接。