The rain spoiled our picnic.

这场雨弄得我们的野餐一团糟。

spoil有溺爱的意思（看下例），也有搞糟，弄糟的意思。

例：
He gives whatever his son asks for, that can only spoil his child.
他孩子要什么他就给什么，这只会宠坏他的孩子。
Don't tell Tom that we are preparing a birthday party for him, it will  spoil the surprise.
不要告诉汤拇我们正为他整备生日派对，这会失去惊喜的。

1.                        Isn't it a shame that the rain spoiled our picnic? 

这场雨把我们的野餐给搅了，可惜不可惜？

2.                        There's no need to turn on me just because rain spoiled the picnic. 

没有必要攻击我，只是因为下雨才没能去野餐。

3.                        The picnic was spoiled by the nasty weather. 

野餐被恶劣的天气所破坏。

4.                        The heavy rain spoiled the crops. 

豪雨损坏了农作物。

5.                        Our plan for a picnic is thwart by the rain.

 我们的野餐计划因雨受挫。

6.                        The rain held off just long enough for us to have our picnic. 

雨一时下不起来，我们有足够的时间吃完野餐。

7.                        The rain hold off just long enough for us to have our picnic. 

雨一时下不起来，我们有足够的时间吃完野餐。

8.                        That rain has put the mockers on our plan to have a picnic this afternoon. 

那场大雨破坏了我们今天下午外出野餐的计划。

9.                        Rain made a mockery of our picnic. 

雨使得我们的郊游泡汤了。

10.                    rain put a damper on our picnic plans. 

野餐去除了我们的压抑。