Near synonyms: low brow, groveling, head held high.
Antonyms: flighty.
Sentence:
1, Others always nod and lower their eyebrows in front of him.
2, sadness can not be confined to his temperament, although he nodded his head and lowered his eyebrows in the crowd; however, he still can not hide the elegance and dignity, as lofty as a crane in a flock of chickens.
3. She nodded her head and lowered her eyebrows, and a trace of grief flashed across her face her nodded head and lowered her eyebrows as if she were a budding flower.
4, often bedridden, he was sick with a deep and painful disease, forehead head lowered eyebrows ah!