Gratuitously
adv. 不必要地；无缘无故地；无偿地；平白地
✅ 同义词
📖 牛津释义
gratuitously
adv.
🗣️ 情景例句
Don't lose sleep over it.
别因为这事儿睡不着觉。
Gee, that's bitter.
噢，好苦！
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