Scawtite
片柱钙石
🗣️ 情景例句
The aquarium was so exciting.
水族馆真的很好玩。
Ambition never dies until there is no way out.
不到黄河心不死。
Sometimes the secrecy goes to such an extent that the whole nature of the research cannot be mentioned.
有时，保密竟达到了这样的程度，即连研究工作的整个性质都不准提及。