It's a pro-Biden super PAC that's been running ads trying to promote the president's accomplishments.

该组织是支持拜登的超级政治行动委员会，一直在投放广告，试图宣传总统的成就。

The Hyperoodon bidens is destitute of true teeth in an efficient condition, but its palate is roughened, according to Lacepede, with small unequal, hard points of horn.

Hyperoodon bidens 在有效条件下缺乏真正的牙齿，但根据 Lacepede 的说法， 它的上颚粗糙， 具有不等的小硬角点。