Sources
n. 输入源；发起者；来源（source的复数）
🗣️ 情景例句
Oh, without a doubt.
啊， 毫无问题。
Wisdom in the mind is better than money in the hand.
手里有钱财，不如胸中有文才。
I can't say for certain off-hand.
我还不能马上说定。