nonchalantly
🇺🇸
/ˌnɑːnʃəˈlɑːntli/
🇬🇧
/ˈnɒnʃələntli/
in a way that shows you are not worried or excited about something
She walked nonchalantly through the park, not caring about the rain.
她毫不在意地在公園裡走著,不在乎雨水。