Bidigraph
[计] 有向偶图
🗣️ 情景例句
I'm sure Robbie has them.
我确定在Robbie那里。
An old dog will learn no new tricks.
老家夥学不出新名堂。
One evening, however, the lamb was missing.
可是，一天晚上，那只小羔羊失踪了。