不把…當一回事;對…等閒視之;覺得…無所謂
think nothing of sth / of doing sth
to consider an activity to be normal and not particularly unusual or difficult
She thinks nothing of walking thirty miles a day.她認為一天步行三十英里不足為奇。
釋義來自《牛津高階英漢雙解詞典》第 9 版