Wellspring
n. 水源, 泉源
? 同義詞
??? 情景例句
Fine, thank you.
很好， 謝謝。
A wise man needs not blush for changing his purpose.
智者不恥于改變初衷。
What was the population of the less developed countries in 1950?
1950年不太發達國家的人口是多少？