Spiran
[机] 螺环化合物
🗣️ 情景例句
But most of all,
但最重要的
Will it rain tomorrow?
明天会下雨吗？
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。