Thanklessly
adv. 徒劳的
📖 牛津释义
thanklessly
adv.
🗣️ 情景例句
You forgot to ask me for the change.
你忘了问我要找回零钱。
A man has his hour, and a dog has his day.
人有称心时，狗有得意日。
But I don't understand.
这我就不明白了。