sanguine

乐观的、充满信心的正式

Investors remain sanguine about the company's long-term prospects.

投资人对这家公司的长期前景仍然乐观。

红润的、血红色的旧式

He had a sanguine complexion and a hearty laugh.

他面色红润，笑声爽朗。

血红色、赭红色正式

The artist sketched the portrait in sanguine on rough paper.

那位画家用赭红色在粗纸上画出这幅肖像。