Bidiagraph
[计] 有向偶图
🗣️ 情景例句
It's dangerous to leave your children along while you go shopping.
购物时，把你的孩子单独留在家里是挺危险的。
The foundation of true joy is in the conscience.
真正的愉快之根本在于良心。
Come to see me whenever you like.
你可以随时来见我。