を浮かべた

wore

→ を
phrase Rare #40,199
wore Used with tears, smiles, or other facial expressions to describe them appearing on someone's face. The phrase is often translated as “wore” or “had ... on one's face,” depending on the expression.
JA: 彼は満足そうな笑みを浮かべた。
EN: He wore a satisfied smile.

彼女は魅力的な微笑を浮かべた

She wore a charming smile.

彼は私を見て皮肉微笑を浮かべた

He looked at me with a sarcastic smile.

怪物残酷な微笑みを浮かべた

The monster gave a cruel smile.

その哀れな話を聞いて少女はを浮かべた

The girl’s eyes filled with tears when she heard the heartbreaking story.