"She smirked and complained about people wearing sunscreen."
- "She smirked and complained about people wearing sunscreen."
"she" 「彼女」
"smirked" 「にやにやした」
"complained" about ~" 「〜に文句言った」
"smirked and complained about ~" 「にやにやしながら〜に文句言った」
"people wearing sunscreen" 「日焼け止めを塗ってる人」
- "she smirked while complaining about people wearing sunscreen"
"while ~" 「〜しながら」
"smirked while complaining about ~" 「にやにやしながら〜を文句言った」