we had no winter, the spring would not be so pleasant

If we had no winter, the spring would not be so pleasant; if we did not something taste of adversity, prosperity would not be so welcome .

we had no winter, the spring would not be so pleasant

如果没有冬天，春天不会如此怡人；如果不偶尔遭逢不幸，幸福就不会如此甜蜜。