https://portalvirtualreality.ru/2021/04/05/one-swallow-does-not-make-the-spring/
一燕不成春
https://portalvirtualreality.ru/2021/04/05/one-swallow-does-not-make-the-spring/
这篇文章有帮助吗?
https://portalvirtualreality.ru/2021/04/05/one-swallow-does-not-make-the-spring/