Ditactic
短臂交叉的, 构型的双中心规整性
🗣️ 情景例句
Could you knead the dough for me?
你能帮我揉面吗？
I ate bread for breakfast yesterday.
我昨天早饭吃的是面包。
it must be known to any kind of radio astronomer in the universe.
这个频率是宇宙中任何射电天文学家都应该熟悉的。