Bidiagraph
[计] 有向偶图
🗣️ 情景例句
It's easy to pick something for my colleagues, but it's difficult for my boss.
给同事们的应该不难买，但是给老板的就难罗。
By doing we learn.
经一事，长一智。
Yes, your last shipment wasn't up to par.
嗯，你上次送去的货没有达到标准。