Conulidae
锥海胆科
🗣️ 情景例句
Chairman Mao said it is necessary to drill as much as possible.
毛主席说，反复操练是非常必要的。
Out!
滚出去！
It is hard for us to realize nowadays how difficult it was for the pioneers.
我们今天很难想像昔日的登山先驱们是多么艰苦。