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眉を顰める， 眉をひそめる， 眉をしかめる， まゆをひそめる， まゆをしかめる
1. to knit one's brows (in discomfort, unease, disapproval, etc.), to raise one's eyebrows, to frown, to scowl
tbd
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
