Bipyramidal
双锥体
🗣️ 情景例句
Hope to be a bigger help on the new community-center project.
希望能在新社区中心这件事上提供更大的帮助。
Would you, please?
您肯帮忙？那太好了。
Let me pick it up for you.
我替你捡起来吧。